i30 Owners Club

GOT PROBLEMS OR ISSUES? => DIESEL => Topic started by: guest11171 on September 18, 2018, 12:19:01

Title: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on September 18, 2018, 12:19:01
Hi guys,

Just picked up a 63 plate Hyundai i30 1.6 Diesel Blue Drive Edition. I love the car and couldn't be happier. I am however having a slight issue when starting the car from cold in that the RPM will bounce around for approx 30 seconds or so. The engine sounds as if it is pulsing along with the RPMs and will also settle after approx 30 seconds. Once settled the car idles perfectly and will idle great in traffic etc but having had the car less than a week this is an issue I'd really like to resolve asap before the dealership put it down to wear and tear and refuse to repair it. Any ideas what might be causing this??

TIA
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: Shambles on September 18, 2018, 12:32:38
Hi , welcome to the forum :D

Do you notice any excessive smoke from the exhaust when this is happening while cold? Does it occur when warm or hot?
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on September 18, 2018, 12:36:36
Hi , welcome to the forum :D

Do you notice any excessive smoke from the exhaust when this is happening while cold? Does it occur when warm or hot?

Thank you! I can see what all the fuss is about, the car is fantastic!

I haven't checked the exhaust for smoke yet as I'm usually in the drivers seat but will make a point to check tonight. The temperature has been approx 15 - 20C when starting this week, with the engine cold of course.
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on September 19, 2018, 13:01:10
Hi , welcome to the forum :D

Do you notice any excessive smoke from the exhaust when this is happening while cold? Does it occur when warm or hot?

Thank you! I can see what all the fuss is about, the car is fantastic!

I haven't checked the exhaust for smoke yet as I'm usually in the drivers seat but will make a point to check tonight. The temperature has been approx 15 - 20C when starting this week, with the engine cold of course.

No smoke (white or black) from the exhaust when started. I have contacted the dealership and sent over a video of the tachometer and they think it may be the glow plugs. They have said they will do a full diagnostic and repair under warranty so hopefully they are a little more thorough than they were when they serviced it last week! The idle usually sits at around 750rpm but when it's having one of these moments it tends to bounce between 750 and 900 for the 30 seconds or so that it needs to settle.

Given that the car idles perfectly once it gets going do you think that the glow plugs sound like the most likely explanation? my only other concern is a leak that may be sealed once various components are warm and expanded. Hopefully I will get it back in full working order and I can start enjoying the car as much as I want to!
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: Shambles on September 19, 2018, 13:53:37
I was hinting at the glowies when I asked about any excessive smoke ;)

If it IS a warranty jobbie then you just about made it in time (with your 63 reg).
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on September 19, 2018, 15:55:06
I was hinting at the glowies when I asked about any excessive smoke ;)

If it IS a warranty jobbie then you just about made it in time (with your 63 reg).

Luckily I have an additional 12 months warranty from the approved used dealership (on top of what's left of the 5 year manufacturer warranty) .. as long as nothing goes wrong after that!

Would the glow plugs being faulty be likely to cause excessive smoke or does the lack of smoke support the fact that it might well be the glow plugs?
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: Dazzler on September 19, 2018, 21:58:46
Interesting stuff. Glow plugs would not normally be replaced under warranty as they are a consumable. If they are in this instance and they fix the issue that is a real bonus as they are usually a minimum of A$100 (often more) + labour.  :cool:
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: nzenigma on September 19, 2018, 22:17:24
Same as Shambles, immediate thought is glowies, assume this is a 2014 model ? 63 plate? Also Kms we don't know, so can only speculate on warranty.
It could also be circuit fault or computer not powering plugs and intake preheater long enough.
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on September 19, 2018, 23:18:00
Same as Shambles, immediate thought is glowies, assume this is a 2014 model ? 63 plate? Also Kms we don't know, so can only speculate on warranty.
It could also be circuit fault or computer not powering plugs and intake preheater long enough.

Late 2013 model, 57000 miles. Still under manufacturers warranty and have the additional 12 months from the dealership. Only bought the car 7 days ago with a full service and MOT  so would be very disappointed if they tried to charge me for work that already needed doing! what else could I look for with regards to a circuit/ computer fault? I don’t have any warning lights and the glow plug light goes out almost immediately after turning the key to preheat
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: nzenigma on September 20, 2018, 09:16:15
Mate, don't chase rabbits down holes until you eliminate the obvious pest.
The light is an indication of performance, but the glow plugs actually remain heated for a lot longer.
we should stick with the obvious  for now... that would appear to be poor fuel /air heating.

 :goodjob2:
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on September 20, 2018, 09:34:24
Mate, don't chase rabbits down holes until you eliminate the obvious pest.
The light is an indication of performance, but the glow plugs actually remain heated for a lot longer.
we should stick with the obvious  for now... that would appear to be poor fuel /air heating.

 :goodjob2:

It's booked in tomorrow at the Hyundai garage - dropping it off tonight to allow for a cold start tomorrow. Will update once they have completed their 'investigation' on Friday morning. Really hoping to have it sorted. Have had endless idle issues with my girlfriends mini (not just on cold start) so am gutted to see it continue into this vehicle! fingers crossed I'll be a happy man come Monday ..
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: Robbie on September 20, 2018, 11:04:43
Have had endless idle issues with my girlfriend

Sorry, you lost me there! :)
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: Dazzler on September 20, 2018, 11:06:12
Have had endless idle issues with my girlfriend

Sorry, you lost me there! :)

It's ok, I think they are going steady now..  :snigger:
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on September 20, 2018, 12:47:53
Shame about the car! fingers crossed
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on September 22, 2018, 14:28:09
Picked up the car yesterday, further investigation still needed 🤨 for some reason they only scheduled the car in for an hour and so didn’t get much beyond scanning the car for codes.

Booked in the week after next for a couple of days when I can get a courtesy car to keep me on the road. Really hoping this doesn’t mean it’s something serious ..

Spent weeks deciding on a car, settled on the i30 for their reliability :rolleyes:
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: Dazzler on September 22, 2018, 22:32:27
Picked up the car yesterday, further investigation still needed 🤨 for some reason they only scheduled the car in for an hour and so didn’t get much beyond scanning the car for codes.

Booked in the week after next for a couple of days when I can get a courtesy car to keep me on the road. Really hoping this doesn’t mean it’s something serious ..

Spent weeks deciding on a car, settled on the i30 for their reliability :rolleyes:

Hopefully nothing serious.  Hang in there. Sorry for your troubles.   :Pout:
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: nzenigma on September 22, 2018, 23:35:17
...for some reason they only scheduled the car in for an hour and so didn’t get much beyond scanning the car for codes, which takes 5 minutes  :rolleyes:

 hoping this doesn’t mean it’s something serious .. like dealer pulling finger out and doing some real work

Spent weeks deciding on a car, settled on the i30 for their reliability :rolleyes:

To sort of put your mind at rest, I have a contact who picks up breakdown cars for the RACQ ( equivalent of your AA) he bought his wife a diesel i30, because that is the only car he NEVER has to pick up.

Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on September 23, 2018, 12:18:55
...for some reason they only scheduled the car in for an hour and so didn’t get much beyond scanning the car for codes, which takes 5 minutes  :rolleyes:

 hoping this doesn’t mean it’s something serious .. like dealer pulling finger out and doing some real work

Spent weeks deciding on a car, settled on the i30 for their reliability :rolleyes:

To sort of put your mind at rest, I have a contact who picks up breakdown cars for the RACQ ( equivalent of your AA) he bought his wife a diesel i30, because that is the only car he NEVER has to pick up.

I think I needed to hear that! The car drives great once it’s settled down so fingers crossed it is just the glow plugs and once they’re replaced it’ll be plain sailing!
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on October 01, 2018, 12:13:29
Dropped off this morning for investigation. Booked in for 3 days so have got a Hyundai i10 courtesy car for 3 days to cover me .. huge difference! My i30 has been beginning to make a bit of a clunk when lifting the clutch from first into second and second into third so I mentioned that this morning and hopefully they will make sure it's nothing to worry about! Will update when I hear back from them ..

Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: Dazzler on October 01, 2018, 22:37:44
Dropped off this morning for investigation. Booked in for 3 days so have got a Hyundai i10 courtesy car for 3 days to cover me .. huge difference! My i30 has been beginning to make a bit of a clunk when lifting the clutch from first into second and second into third so I mentioned that this morning and hopefully they will make sure it's nothing to worry about! Will update when I hear back from them ..

Thanks for the update. Good luck for a trouble free fix.  :cool:
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: nzenigma on October 02, 2018, 02:43:58
 :wss:

Wow an i10,  :yummy:       Must be 1 Litre   :toldyou:
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on October 02, 2018, 07:14:39
:wss:

Wow an i10,  :yummy:       Must be 1 Litre   :toldyou:

Correct.. 1 litre petrol  :goodjob2:

Each to their own but I can’t stand the thing! Fine once it gets going but really awkward to move off from a standstill  :fum:
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: nzenigma on October 02, 2018, 21:54:30
One of the luxuries of living in Oz. Nothing less than i20.  :victory:

In 1970s we used to get under powered versions from Britain . Ford Escort was unforgettable.They had compensated the smaller, city only, motor with a very low ratio diff, would rev like mad on the highway at 60 mph.
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: Dazzler on October 02, 2018, 23:08:53
One of the luxuries of living in Oz. Nothing less than i20.  :victory:

...and they stopped selling that new a couple of years ago! We do get the Kia Picanto though (which is a I think an i10 Clone)  :cool:
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: noels_hobby on October 02, 2018, 23:42:18
I too get this diesel hunting from time to time on cold starts initially thought one pot not heating but no. seems to be a diesel fuel issue or rather something in the diesel, fires fine when hot runs great terrific economy. diesel conditioner - stabilizer cures the issue but it comes back when the conditioner mix thins out. Doesn't seem to occur on truck diesel only the car - highway fuel.
noel   
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: Dazzler on October 03, 2018, 04:52:41
Thanks Noel.

The dreaded diesel bug!  :fum:
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on October 03, 2018, 20:11:59
Collected tonight, very disappointed!

Cold start problem still there.

Also asked the garage to investigate a gearbox/ clutch clunk as well as to repair the rear wiper (which doesn’t spray any fluid) and to fit a trim to the window that was missing when we bought it.

None of the above had been done!

Considering rejecting the car but might give them one more attempt at fixing it.
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: Dazzler on October 03, 2018, 21:43:00
Collected tonight, very disappointed!

Cold start problem still there.

Also asked the garage to investigate a gearbox/ clutch clunk as well as to repair the rear wiper (which doesn’t spray any fluid) and to fit a trim to the window that was missing when we bought it.

None of the above had been done!

Considering rejecting the car but might give them one more attempt at fixing it.

I'm a fairly easy going guy, but situations like this really push my buttons. Talk to somebody senior there and say look at it from my point of view. I have 4 issues on my "new" car. I leave it with you guys and nothing fixed!!  :crazy1: 0/10  :fum:
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: nzenigma on October 03, 2018, 21:52:42
One of the luxuries of living in Oz. Nothing less than i20.  :victory:

...and they stopped selling that new a couple of years ago! We do get the Kia Picanto though (which is a I think an i10 Clone)  :cool:

Kia  :spitty: Im not surprised, even the name is rubbish.  :rolleyes:
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: nzenigma on October 03, 2018, 22:02:20
Collected tonight, very disappointed!

Cold start problem still there.

Also asked the garage to investigate a gearbox/ clutch clunk as well as to repair the rear wiper (which doesn’t spray any fluid) and to fit a trim to the window that was missing when we bought it.

None of the above had been done!

Considering rejecting the car but might give them one more attempt at fixing it.

I'm a fairly easy going guy, but situations like this really push my buttons. Talk to somebody senior there and say look at it from my point of view. I have 4 issues on my "new" car. I leave it with you guys and nothing fixed!!  :crazy1: 0/10  :fum:

 :whsaid:

Mate they are just stuffing you around.  I would also question the "senior" about his industry experience, is this problem beyond his ability? If not, why hasn't the car been fixed?
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on October 03, 2018, 22:41:57
Thanks for your input guys, just trying to decide between giving them another chance or asking them to cover the cost of repair at another garage. I am very concerned that this is an issue that will only get worse and don’t want to be in the situation that I have been in the past where the car becomes undriveable because of a problem that could have been sorted when it first came on ..
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: Dazzler on October 03, 2018, 22:46:43
Thanks for your input guys, just trying to decide between giving them another chance or asking them to cover the cost of repair at another garage. I am very concerned that this is an issue that will only get worse and don’t want to be in the situation that I have been in the past where the car becomes undriveable because of a problem that could have been sorted when it first came on ..

Make noises about taking it elsewhere with them to pay the costs. This might scare them into "pulling their finger out"!. Obviously if they encourage you to go that way, make sure you get something in writing or you could be left "hung out to dry" with a big bill.

Threaten consumer protection if they are not supportive and understanding. You've done the Mr Nice guy thing already.  :evil:
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on October 05, 2018, 12:52:44
Thanks for your input guys, just trying to decide between giving them another chance or asking them to cover the cost of repair at another garage. I am very concerned that this is an issue that will only get worse and don’t want to be in the situation that I have been in the past where the car becomes undriveable because of a problem that could have been sorted when it first came on ..

Make noises about taking it elsewhere with them to pay the costs. This might scare them into "pulling their finger out"!. Obviously if they encourage you to go that way, make sure you get something in writing or you could be left "hung out to dry" with a big bill.

Threaten consumer protection if they are not supportive and understanding. You've done the Mr Nice guy thing already.  :evil:

Another 2 days passed and I still haven't received the job card for the work that had been done! The service manager had no idea what had been done when I went to collect the car and so all in all very frustrating.

I emailed this morning to express my disappoinment and, having copied the sales executive that sold me the car into the emails, the service manager has miraculously become very pleasant and has promised me the job card by the end of the day. They have also offered to come and collect my car next week and leave me with another courtesy car to (hopefully) resolve the additional issues for good.

Time will tell how the next investigation pans out but I really didn't intend to be returning to the garage 3 times in 3 weeks for simple repair work like this! It's a good job that I absolutely love the car or else this would have all gone down very differently!  :twisted:
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: Dazzler on October 05, 2018, 13:41:10
They are lucky you are so patient. Keep at them and hopefully you will end up with a good result.  :Good_luck:
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: nzenigma on October 05, 2018, 22:23:29
 
They are lucky you are so patient. Keep at them and hopefully you will end up with a good result.  :Good_luck:

 :wss:

Stay with it, hold the loan car until satisfied.
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on October 06, 2018, 08:04:23
They are lucky you are so patient. Keep at them and hopefully you will end up with a good result.  :Good_luck:

 :wss:

Stay with it, hold the loan car until satisfied.

I think the current plan is to allow them one more chance and if they still haven't resolved any of the issues then to demand they pay for the repair to be done elsewhere. I would be well within my rights to reject the car should it be unrepairable and to get a full refund but I really don't want to have to get rid of the car.

Is this really such a difficult fault to repair? ONLY occurs on COLD starts, 1 in every 3 or 4 ..

Surely there are only so many components that would affect the car finding idle upon cold start??

STILL haven't received the job card so no idea if they even did the glow plugs
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: Dazzler on October 06, 2018, 11:18:38
Unfortunately I think some of these places make it all too hard hoping people will go away and just live with the issues.  :disapp:

Once they realise you won't put up with crap, they may pull their finger out.

I had nearly 20 years as a Banker (don't even go there guys :evil: ) and almost the same in retail and always did my best to keep customers happy. I don't understand the mentality of some of these places.  :crazy1:
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on October 06, 2018, 11:25:24
Unfortunately I think some of these places make it all too hard hoping people will go away and just live with the issues.  :disapp:

Once they realise you won't put up with crap, they may pull their finger out.

I had nearly 20 years as a Banker (don't even go there guys :evil: ) and almost the same in retail and always did my best to keep customers happy. I don't understand the mentality of some of these places.  :crazy1:

I think it's partly down to the fact that they see so many customers over the years that they become a little numb to the complaints but I always like to make them consider how they would feel if someone else had sold this car/ product/ service etc to a loved one of theirs and had given them the same level of poor service. I am more than willing to look past the window trim and rear wiper defects (albeit it a little disappointing from a main dealer) but the cold start issue is a red flag for me that must be repaired before I am satisfied that I will be keeping the car!
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: nzenigma on October 06, 2018, 22:02:17
Unfortunately I think some of these places make it all too hard hoping people will go away and just live with the issues.  :disapp:

Once they realise you won't put up with crap, they may pull their finger out.

I had nearly 20 years as a Banker (don't even go there guys :evil: ) and almost the same in retail and always did my best to keep customers happy. I don't understand the mentality of some of these places.  :crazy1:

I think it's partly down to the fact that they see so many customers over the years that they become a little numb to the complaints but I always like to make them consider how they would feel if someone else had sold this car/ product/ service etc to a loved one of theirs and had given them the same level of poor service. I am more than willing to look past the window trim and rear wiper defects (albeit it a little disappointing from a main dealer) but the cold start issue is a red flag for me that must be repaired before I am satisfied that I will be keeping the car!

This is a corporate plague.
The only thing that is numb is the management mindset.

It starts from the top and infects all the staff. They do nothing, they learn nothing and eventually arrogance masks their incompetence.

Most contemporary managers have had little or no experience in running their own business, they do not understand the principle of "the happy repeat customer and his friends, puts food on the table".

Basically, they will exist in their current job until the next financial crash. After that, they will tell us that they are blameless, it was all the fault of Wall Street and they are entitled to line up for the dole money we supply.

END of sermon #657  :happydance:
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: tw2005 on October 06, 2018, 22:10:29
Unfortunately I think some of these places make it all too hard hoping people will go away and just live with the issues.  :disapp:

Once they realise you won't put up with crap, they may pull their finger out.

I had nearly 20 years as a Banker (don't even go there guys :evil: ) and almost the same in retail and always did my best to keep customers happy. I don't understand the mentality of some of these places.  :crazy1:

I think it's partly down to the fact that they see so many customers over the years that they become a little numb to the complaints but I always like to make them consider how they would feel if someone else had sold this car/ product/ service etc to a loved one of theirs and had given them the same level of poor service. I am more than willing to look past the window trim and rear wiper defects (albeit it a little disappointing from a main dealer) but the cold start issue is a red flag for me that must be repaired before I am satisfied that I will be keeping the car!

This is a corporate plague.
The only thing that is numb is the management mindset.

It starts from the top and infects all the staff. They do nothing, they learn nothing and eventually arrogance masks their incompetence.

Most contemporary managers have had little or no experience in running their own business, they do not understand the principle of "the repeat customer talking to his friends puts food on the table".

Basically, they will exist in their current job until the next financial crash. After that, they will tell us that they are blameless, it was all the fault of Wall Street and they are entitled to line up for the dole money we supply.

END of sermon #657  :happydance:
Sorry, I've missed the previous 656 is there a depository of such contentious words of wisdom?

(http://www.fitnessnetwork.com.au/Images/questionmark.jpg)

Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on October 06, 2018, 23:05:35
Customer service aside .. I won’t be receiving the job card for the work done until Monday at the earliest so can’t do much more investigation in the mean time.

If they haven’t changed the glow plugs already then I will remain optimistic that it could be as simple as replacing those but I am reading lots on other forums about injectors and injector timing and fuel pressure/ fuel pressure sensor(s).

Considering running a bottle of Wynn’s injector cleaner or diesel system cleaner through my next tank of diesel as a little ‘experiment’. Would anyone recommend? I am half wondering if their hesitance to provide me with a job card means that they probably haven’t done much more than that anyway ..
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on October 06, 2018, 23:55:49
.. and a video for anyone that is interested ..

 :link: Hyundai i30 cold start idle fluctuations - YouTube (https://youtu.be/iXI6VJE3z2w)
https://youtu.be/iXI6VJE3z2w

again, ONLY on completely cold starts and only one in every 3 or 4. Never idles rough once it has settled and never when starting the car still warm.
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: Vitruvian on October 08, 2018, 22:34:03
Hi, I have 2013. 1.6CRDI (97 000km) with same issue. I bought it used four months ago and didn't experience this issue until weather conditions was changed.
What I notice is that it happens only on first (cold) start when temperature is from 17 to 22°C
No problems at all on higher or lower temperatures from that, even on 2°C so it is definitely not glow plugs.
My opinion is that it is probably problem with some temperature sensor, I don't know...

It's happening rare and I actually can live with it, I don't have any warranty to complain to someone and except that issue, car is working great.

I understand your frustration because you have warranty and I really hope you will solve this soon.
Please keep us informed

Just one more thing, my i30 also have missing decorative chrome strip under small quarter window.
They seem to have used some bad glue in 2013.
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: Dazzler on October 08, 2018, 22:53:32
Hi Vitruvian, Thanks for that feedback.  :cool:
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on October 09, 2018, 08:04:57
Hi, I have 2013. 1.6CRDI (97 000km) with same issue. I bought it used four months ago and didn't experience this issue until weather conditions was changed.
What I notice is that it happens only on first (cold) start when temperature is from 17 to 22°C
No problems at all on higher or lower temperatures from that, even on 2°C so it is definitely not glow plugs.
My opinion is that it is probably problem with some temperature sensor, I don't know...

It's happening rare and I actually can live with it, I don't have any warranty to complain to someone and except that issue, car is working great.

I understand your frustration because you have warranty and I really hope you will solve this soon.
Please keep us informed

Just one more thing, my i30 also have missing decorative chrome strip under small quarter window.
They seem to have used some bad glue in 2013.

Wow, what are the chances!  :lol:

I will keep all informed when I hear anything back .. STILL no idea what has actually been done yet!

Currently running a few tanks of premium diesel through to see if that might clean up the injectors etc a little .. will report back
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: CraigB on October 09, 2018, 08:47:03
What happens if you rev the engine a little when the rpm is fluctuating, does it become normal after that?
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on October 09, 2018, 12:33:32
What happens if you rev the engine a little when the rpm is fluctuating, does it become normal after that?

I haven’t attempted that as I don’t want to mask the issue. Would trying this provide any useful information towards identifying a potential cause?

Having revved through months of idle issues in my girlfriends Mini Cooper, the sodding thing eventually started to cut out even when driving. Four or five garages including a mini specialist looked at the car during the worst of the idle issues and none could identify the cause. Thousands of pounds on repairs and a replacement car later and I’ve learnt my lesson to have the problem resolved early rather than trying to live with it!

FINALLY HEARD BACK FROM THE GARAGE RE: WORK CARRIED OUT ..

The workshop controller has got back to me and has detailed all investigation/ repair work done. They have replaced all 4 glow plugs and believe this should have cured this issue. Admittedly, the symptoms have improved drastically but the car still doesn’t settle immediately upon cold start every time. Should I expect it to? All of my previous cars have but they have all been petrol. I am now getting very subtle pulsing for approx 10-15 seconds. A huge improvement on the video you can see above but I’m not entirely certain this is fully rectified?

As for the rest .. the technicians couldn’t replicate the gearbox/ clutch noise, they didn’t find any faults with the rear washer and no one had told them that the trim needed fitting. Fair enough with the gearbox/ clutch and with the trim but as for the rear washer? the thing doesn’t spray any fluid!! I am booked to return late October for a second attempt with these additional faults.

Hopefully all will be resolved next time I collect and I can start to enjoy it as much as I should be able to! absolutely love the bloody thing so would love for it to work flawlessly  :lol:
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: CraigB on October 09, 2018, 13:27:57
With the idle fluctuations at start I get similar in my car though it's petrol so results may differ :undecided: a little acceleration cures it for me and I believe it's due to manifold pressure which is why slight acceleration increases the airflow achieving positive pressure and a good vortex then idle is fine.

Cold starts with fast idle aren't a problem for mine as this increases airflow automatically but start up on warmer days just need that little rev after starting sometimes.
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: eye30 on October 09, 2018, 15:07:36
Have they tried resetting the rpm via the ecu such as clearing all data and start from scratch as if new ecu?

Or check the ecu isn't faulting?



Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on October 09, 2018, 16:44:09
With the idle fluctuations at start I get similar in my car though it's petrol so results may differ :undecided: a little acceleration cures it for me and I believe it's due to manifold pressure which is why slight acceleration increases the airflow achieving positive pressure and a good vortex then idle is fine.

Cold starts with fast idle aren't a problem for mine as this increases airflow automatically but start up on warmer days just need that little rev after starting sometimes.

Oddly enough I do find the warmer days a little more testing than the cold .. part of the reason I am not 100% confident that replacing the glow plugs has cured the issue. Symptoms have drastically improved though and so I will keep a close eye on it before returning in a couple of weeks to have the more minor issues resolved. I have asked the lead technician if they actually found a fault in any of the glow plugs but (as expected) he is yet to respond ..

Have they tried resetting the rpm via the ecu such as clearing all data and start from scratch as if new ecu?

Or check the ecu isn't faulting?





Not as far as I am aware. I believe they will begin to pursue that route once they have exhausted the more rudimentary possibilities such as the glow plugs, the injectors and the engine coolant temperature sensor.
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: PhireSideZA on October 09, 2018, 20:25:54
Is there any chance you can plug an OBD scanner in and use Torque or a similar app to see if there is anything changing the throttle reading?

****

I know 'throttle' is technically the incorrect term on a diesel engine but I'm calling it that as that is how it would show on the OBD scan tool :)

It looks like the engine settles into a rhythym and then something is causing it to fluctuate for whatever reason. One would think that since the injectors were replaced all the air would be purged out the fuel lines, so the chances of an airlock is relatively small.

Is your A/C turned on when you start the car and when the issue is experienced? Turning on the AC on my petrol FD will cause the revs to fluctuate a bit as the compressor clutch kicks in and the throttle body opens slightly to compensate, but the ECU should just allow a little bit more diesel per cycle into the manifolds to do the same on the diesel engine in any case.



Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: nzenigma on October 09, 2018, 22:06:38
Have just watched video and got to say I now have some sympathy for the  head mechanic.
 Irrespective of all the mentioned wisdom on Facebook et al  :whistler: :rolleyes:, ... the mechanic is probably ahead of the game and to find the cause of that small fluctuation during a 30 second window, once a day, is going to be very hard.

You say glowies improved the start. Thats a fairly good clue.
After 30secs all is well,  next warm start, all is well! Therefore everything works, injector cleaners etc are going to do bugger all.
 Did they also check the air preheat element?
 Is EGR valve functioning correctly?


END of sermon #657  :happydance:
Sorry, I've missed the previous 656 is there a depository of such contentious words of wisdom?
[/quote]

In your case MATE read : Suppository.     :twisted:
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on October 10, 2018, 10:32:52
UPDATE: another email from the workshop controller (very helpful guy .. wish I had been dealing with him from the start) ..

Apparently 3 out of the 4 glow plugs were open circuit when tested. All 4 have been replaced. This seems to suggest that the fault has in fact been rectified and what I am now experiencing is just a regular consequence of the car finding idle when cold. Fingers crossed.

The rear washer is to be repaired next time I am in and the gearbox/ clutch clunk further investigated. Should all look normal with the gearbox and clutch then I will be satisfied that there is no fault given that the noise seems to have no effect on changing gear etc, it just doesn't sound very pleasant! They have now ordered the rear quarter window trim and so that too should be rectified when next in. Looking forward to this next visit, should finally come away with the car that I wanted!
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: Dazzler on October 10, 2018, 10:49:38
UPDATE: another email from the workshop controller (very helpful guy .. wish I had been dealing with him from the start) ..

Apparently 3 out of the 4 glow plugs were open circuit when tested. All 4 have been replaced. This seems to suggest that the fault has in fact been rectified and what I am now experiencing is just a regular consequence of the car finding idle when cold. Fingers crossed.

The rear washer is to be repaired next time I am in and the gearbox/ clutch clunk further investigated. Should all look normal with the gearbox and clutch then I will be satisfied that there is no fault given that the noise seems to have no effect on changing gear etc, it just doesn't sound very pleasant! They have now ordered the rear quarter window trim and so that too should be rectified when next in. Looking forward to this next visit, should finally come away with the car that I wanted!

Thanks for keeping us in the loop. When someone has an issue we like to follow it through to the conclusion. All knowledge to share with future members.  :goodjob:
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on October 10, 2018, 11:53:01
UPDATE: another email from the workshop controller (very helpful guy .. wish I had been dealing with him from the start) ..

Apparently 3 out of the 4 glow plugs were open circuit when tested. All 4 have been replaced. This seems to suggest that the fault has in fact been rectified and what I am now experiencing is just a regular consequence of the car finding idle when cold. Fingers crossed.

The rear washer is to be repaired next time I am in and the gearbox/ clutch clunk further investigated. Should all look normal with the gearbox and clutch then I will be satisfied that there is no fault given that the noise seems to have no effect on changing gear etc, it just doesn't sound very pleasant! They have now ordered the rear quarter window trim and so that too should be rectified when next in. Looking forward to this next visit, should finally come away with the car that I wanted!

Thanks for keeping us in the loop. When someone has an issue we like to follow it through to the conclusion. All knowledge to share with future members.  :goodjob:

Not a problem . Believe me, I know how frustrating it can be to find a thread with no conclusions!
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: nzenigma on October 10, 2018, 22:45:57
Its good that you are more comfortable with the car.
My previous post alluded to the fact that the fault had been fixed , as you have since been told.

Apparently 3 out of the 4 glow plugs were open circuit when tested. All 4 have been replaced. This seems to suggest that the fault has in fact been rectified and what I am now experiencing is just a regular consequence of the car finding idle when cold. Fingers crossed.

" Fingers Crossed"  :wink: Dont worry. Read through this whole thread and you will come to the conclusion that Dazz and Shambles provide a damn good service to i30 owners.

1. You had a genuine grievance.
2. The dealers non-communication was appalling.
3. Common to the webnet you became confused by commentary from motor-mouths with no real experience.
4. As best WE can, from the other side of the world,  :happydance: we have given you succinct advice.

Thanks for the much needed updates. Happy Motoring.  :goodjob2:

 

Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on October 11, 2018, 16:31:43
Its good that you are more comfortable with the car.
My previous post alluded to the fact that the fault had been fixed , as you have since been told.

Apparently 3 out of the 4 glow plugs were open circuit when tested. All 4 have been replaced. This seems to suggest that the fault has in fact been rectified and what I am now experiencing is just a regular consequence of the car finding idle when cold. Fingers crossed.

" Fingers Crossed"  :wink: Dont worry. Read through this whole thread and you will come to the conclusion that Dazz and Shambles provide a damn good service to i30 owners.

1. You had a genuine grievance.
2. The dealers non-communication was appalling.
3. Common to the webnet you became confused by commentary from motor-mouths with no real experience.
4. As best WE can, from the other side of the world,  :happydance: we have given you succinct advice.

Thanks for the much needed updates. Happy Motoring.  :goodjob2:

And I greatly appreciate the help!

Although i'm still not totally convinced that the car is fully happy .. I do get a very subtle (but definitely noticable) RPM/ engine pulsing for approx 10-15 seconds on 1 in every 3 or 4 cold starts. Could this just be the glow plugs settling in or is it possible that there is an issue somewhere else in the starting system?
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on October 18, 2018, 12:18:58
Alright guys, so after two weeks of trying to convince myself that the subtle pulsing I was experiencing on cold starts was normal, the issue has unfortunately returned. Upon starting the car yesterday after work the issue was back to normal, notable RPM fluctuations with a very unhappy sounding engine. All resolved within 30 seconds and the car drove fine home.

Having just had 4 new glow plugs from the dealership (due to 3 of the previous 4 being tested as 'open circuit') and with no issues once this has settled what else could we be looking at? surely the perfect idle at all other times would render explanations like vacuum leaks, engine coolant sensor faults, injector damage etc as very unlikely? could it be the glow plug controller/ relay? what would cause brand new glow plugs to continue playing up?

TIA
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: eye30 on October 18, 2018, 16:15:29
See #49

Has this been tried/ruled out yet



Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on October 18, 2018, 17:36:41
See #49

Has this been tried/ruled out yet







This hasn’t been tried yet. They have the car next Friday and so hopefully they will be looking along these lines should nothing else obvious be found. Hard to suggest things like this without sounding like I am trying to tell them how to do their job!
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on October 26, 2018, 11:13:35
UPDATE
(https://preview.ibb.co/eWCaGV/39-E9539-E-6-F14-47-A6-BAA5-443-B560-ED65-D.jpg) (https://ibb.co/g4n9bV)

what are your thoughts on this? a reasonable repair attempt?

assuming they tested the glow plugs and they were fine this time ..
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: Dazzler on October 26, 2018, 11:37:38
I would say to them that you want to try a cold start when you pick it up. For starters, excuse the pun.. :whistler:

Have a good look at the trim repair to make sure it's tidy and secure and ask them to document the clutch noise issue in case it gets worse.   :cool:
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on October 26, 2018, 12:42:57
I would say to them that you want to try a cold start when you pick it up. For starters, excuse the pun.. :whistler:

Have a good look at the trim repair to make sure it's tidy and secure and ask them to document the clutch noise issue in case it gets worse.   :cool:

Absolutely! although chances are it’ll be fine with them and go wrong tomorrow! the wonders of an intermittent issue!
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: Dazzler on October 26, 2018, 12:59:39
Yeah. Intermittent are the worst!  :fum:
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on October 26, 2018, 13:53:51
Yeah. Intermittent are the worst!  :fum:

Still a little suspect that the glow plugs were faulty first time around and now they think it’s something else? could an incorrectly configured ECU have affected the GPs?
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: CraigB on October 26, 2018, 14:35:35
could an incorrectly configured ECU have affected the GPs?
The ECU controls everything to do with engine management so many areas can be affected.
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on October 26, 2018, 21:52:07
Yeah. Intermittent are the worst!  :fum:

Still a little suspect that the glow plugs were faulty first time around and now they think it’s something else? could an incorrectly configured ECU have affected the GPs?

Mate, I would forget about GPs, you keep barking up the wrong tree. Do a bit of reading !!
They are there to achieve a cold start, they can be reapplied by the ECU in certain circumstances to enhance emissions.
Once your motor is running for 30 seconds, GP task is over.
In my warm region, I can cold start a car without them.

Except 3 out of the 4 were tested as faulty the first time it went in and replaced  :goodjob2: symptoms haven’t changed to seems silly to bark up any other tree! particularly as the trouble is all within the first 30 seconds of starting the car :lol:

In any case .. the software update has been done and I’ve got the car back. Will update with any developments.
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: nzenigma on October 26, 2018, 22:31:53
"[GPs] were ... faulty... and replaced symptoms haven’t changed "

Which demonstrates that GPs do not radically affect the car's performance.

In simple terms, you had an engine management fault and ALSO 3 faulty glow plugs.

You now have an engine management fault .

Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on October 27, 2018, 08:43:32
"[GPs] were ... faulty... and replaced symptoms haven’t changed "

Which demonstrates that GPs do not radically affect the car's performance.

In simple terms, you had an engine management fault and ALSO 3 faulty glow plugs.

You now have an engine management fault .

And yet, replacing the glow plugs had significant effect on the SEVERITY of the symptoms. Odd.
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: guest11171 on October 27, 2018, 09:35:48
"[GPs] were ... faulty... and replaced symptoms haven’t changed "

Which demonstrates that GPs do not radically affect the car's performance.

In simple terms, you had an engine management fault and ALSO 3 faulty glow plugs.

You now have an engine management fault .

And yet, replacing t"[GPs] were ... faulty... and replaced symptoms haven’t changed "
 Odd.

@Cap2018 , with respect mate, never go to Court. Your story is changing and frankly I must defend your mechanic.
You have said , the faulty GPs were replaced and the symptoms haven’t changed
Now you say , the glow plugs had significant effect on the SEVERITY of the symptoms.

As an advocate for your mechanic I would suggest that there were two separate faults. One was professionally repaired the other has yet to be diagnosed; and you refuse to acknowledge that fact.

Feel free to reread the thread, mate. GPs were replaced but never once did I say that I believe the idle is fully cured. I have maintained that there is at the very least a subtle pulsing on cold starts throughout this entire thread. The symptoms haven't changed, the severity of the symptoms has. I don't understand your confusion? Still getting RPM bouncing, still on cold starts and still lasting 20-30 seconds. Less severe fluctuations but fluctuations none-the-less. You may well be right and these may be 2 separate issues but given the current situation, I believe that to be a little unlikely. I appreciate the assistance that you and others have provided on this forum but, with respect, don't appreciate you patronising me.
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: nzenigma on October 27, 2018, 09:57:41
Sorry but I am not the mechanic on this job, I am 1000s of miles away. I can only rely upon your  hopefully concise and un-emotive information, to which I respond in kind,.
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: Paolo39 on October 27, 2018, 15:58:10
Everyone here was blaming GP for the cold start RPM fluctuations.

I have the question: Did you or mechanics checked fuel pressure withing this 30s from start?

It sounds like fuel delivery issue, maybe caused by software fault (like your garage stated).
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: nzenigma on October 27, 2018, 21:25:29
Everyone here was blaming GP for the cold start RPM fluctuations.
I have the question: Did you or mechanics checked fuel pressure withing this 30s from start?
It sounds like fuel delivery issue, maybe caused by software fault (like your garage stated).

hi my old friend :) Thankyou for your rational suggestion, you could well be on the money.  :goodjob:
To do that test they have a very short window of opportunity, perhaps  better to use a data logger if it is available.
The GP problem is done and dusted. The lack of smoke indicated that they were not causing any major problem, even though only one was working.
However, without any mechanical wisdom, Cap2018 has solidly wedged the GP problem in his mind along with imagined repercussions in the future.
 All this is irrespective of his mechanics and our assertions to the contrary.
I have put up with this BS for 3 pages only now to be called "patronising'.
If his mechanics are copping the same treatment, he has little chance of gaining their cooperation.
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: Paolo39 on October 27, 2018, 21:40:20
Everyone here was blaming GP for the cold start RPM fluctuations.
I have the question: Did you or mechanics checked fuel pressure withing this 30s from start?
It sounds like fuel delivery issue, maybe caused by software fault (like your garage stated).

hi my old friend :) Thankyou for your rational suggestion, you could well be on the money.  :goodjob:
To do that test they have a very short window of opportunity, perhaps  better to use a data logger if it is available.
The GP problem is done and dusted. The lack of smoke indicated that they were not causing any major problem, even though only one was working.
However, without any mechanical wisdom, Cap2018 has solidly wedged the GP problem in his mind along with imagined repercussions in the future.
 All this is irrespective of his mechanics and our assertions to the contrary.
I have put up with this BS for 3 pages only now to be called "patronising'.
If his mechanics are copping the same treatment, he has little chance of gaining their cooperation.
Hi nzenigma,
I have to put with this sort of thigs on daily basis - scientific equipment engineer. How many times I have heard - I did not do it, or I already tried this and did not worked. Always after my sugestion that this will cost 2k, or over, then I finally get to the truth, what actually was done to equipment.
You have to grow thick skin, thats all.
It is frustrating, especially that you try to help.
Some people forget, that we do not have x-ray vision, or we are not mind readers.



Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: Shambles on October 28, 2018, 20:38:38
Sorry chaps, CAP2018 has left the building.
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: Dazzler on October 28, 2018, 21:54:08
Sorry chaps, CAP2018 has left the building.

 :happydance:  I bet his dealer dreams of having the same release.

Not an ideal outcome in my opinion.  :disapp:

I appreciate your help very much Gary, but if members choose not to go with it verbatim then they shouldn't be made to feel uncomfortable.  Just saying.  :undecided:
Title: Re: RPM fluctuates after cold start for ~30 secs. Idles fine once settled.
Post by: Dazzler on October 29, 2018, 10:56:43
I've PM'd you Garry.  :goodjob:
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