Author Topic: 2.0 CRDI trouble starting - new battery/alternator no warning lights?  (Read 1941 times)

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  • Laughter is the best medicine. .
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@tweety

Wow! Long time between drinks! How have you been! You need to update us in members trips or something about your road trips!  :winker: :happydance:
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  • gb United Kingdom
    Bristol
Well disaster. Took it to a garage as I couldn’t get the sensor out, even they struggled with it up on the ramps.
Put the new sensor in (Valeo) and it wouldn’t start. In fact it was worse than before it wouldn’t start AT ALL. Stuck on their ramp. Put the old one back on still wouldn’t start. Put the new one back in, still no joy. After about 30-45 mins of trying to start it suddenly started? They turned it off/on about 5 times and it started each time.
They plugged their reader in whilst trying to start it and first it said no crank signal at all then it said faulty signal (can’t remember what the word was it wasn’t ‘faulty’).
Only thing they can suggest is taking it to Hyundai so they can plug into the diagnostic port under the bonnet and get some more in depth info as to what the problem is :(
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  • au Australia
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Did they do any harness work or fault finding electrically?

Corroded plug or wires? 

If the new item is replicated the original fault and when the old one was fitted also the same could it not be that there s a bad connection?


I'd have close look at the plug/socket where the sensor plugs, and a good look deep in there in case moisture or salt ingress has started the green plague . 

Photos too if you can  :Cuppa:
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  • au Australia
    Samford Valley
 :wss:

Lock step with Gerard.

A case of the Bert Russells  up there? 

 to set the scene-:

Up the ramp at 'Little Britain':

You cant get sensor out, mechanics have same trouble.
 Maybe salt on your roads is causing corrosion. Its also called rust and/or verdigris.
"Gee never noticed that"

Could salt water also have an affect on electrical connectors, especially those under the bonnet, and exposed to road spray?
" Gee never thought of that"

  anyway, " Computer says no!"  _hit alt delete _"Go to Hyundai". :wacko:

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  • gb United Kingdom
    Bristol
Well after having the car taken to my warranty garage, then Hyundai and 4 hours of labour, turns out the brand new Valeo sensor was faulty so they’ve fitted a new Hyundai one. As it’s a faulty part I’m not covered by my warranty (should have claimed from the start rather than trying to save time and doing myself) but at least it’s allgedly sorted! Picking it up tomorrow
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  • england England
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  • Wirral, UK. - 1.4 Petrol Active - Aqua Blue
Take faulty part back and ask for refund!
  • 1.4 Petrol Active       I'm no expert, so please correct me if I'm wrong

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  • gb United Kingdom
    Bristol
I am indeed, also claiming for the 4 hours of labour @ dealer rate to diagnose the non-existent fault
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Well after having the car taken to my warranty garage, then Hyundai and 4 hours of labour, turns out the brand new Valeo sensor was faulty so they’ve fitted a new Hyundai one. As it’s a faulty part I’m not covered by my warranty (should have claimed from the start rather than trying to save time and doing myself) but at least it’s allgedly sorted! Picking it up tomorrow
Take faulty part back and ask for refund!

I am indeed, also claiming for the 4 hours of labour @ dealer rate to diagnose the non-existent fault

  :seriously: This saga has so many holes and fingers in it. I would say you have buckleys chance.  :spitty:

Prove the sensor is faulty, prove that Hyundai spent 4 hrs on the job...and why so long? Change the sensor is a 15 minute job.
« Last Edit: January 14, 2019, 14:58:47 by nzenigma » »
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Did Hyundai state in their report the Valeo sensor was a dud? Did they find anything else? Wiring?
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  • gb United Kingdom
    Bristol
Well after having the car taken to my warranty garage, then Hyundai and 4 hours of labour, turns out the brand new Valeo sensor was faulty so they’ve fitted a new Hyundai one. As it’s a faulty part I’m not covered by my warranty (should have claimed from the start rather than trying to save time and doing myself) but at least it’s allgedly sorted! Picking it up tomorrow
Take faulty part back and ask for refund!

I am indeed, also claiming for the 4 hours of labour @ dealer rate to diagnose the non-existent fault

  :seriously: This saga has so many holes and fingers in it. I would say you have buckleys chance.  :spitty:

Prove the sensor is faulty, prove that Hyundai spent 4 hrs on the job...and why so long? Change the sensor is a 15 minute job.

Maybe I’ve explained it badly...
I bought a genuine Valeo sensor brand new, had it fitted but the fault persisted. Being a good brand neither the first garage nor Hyundai suspected for a second it was a dud sensor, it also gave engine speed data on the live feed when plugged into the diagnostic socket so it seemed fine. Only when they had tried literally everything else, did they try a sensor as a last ditch attempt and as they had one in stock, hey presto it then worked fine.
Hyundai have written a report to say the sensor was at fault, the company I bought the sensor from have sent me a form and will send the sensor to Valeo for testing - if it is faulty it sounds like I’ll get the labour back as well. Problem will be if Valeo say it’s fine, then I’m a bit stuck!

Thankfully in the UK consumer law is pretty good, so if they confirm it’s faulty and refuse to pay the labour I can sue them for it easily enough (the running total is £3-400 now so I’m fully prepared to do that if the sensor was truly a dud).

I’m still dubious it was the sensor, and Hyundai were happy to open one and try it on the off chance, who says I’d have even paid for it? Has anyone had a dud new Valeo sensor before? I get the impression it’s pretty rare...

Watch this space!
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  • gb United Kingdom
    Bristol
Yes so they tell me, picking the report and the car up tomorrow.
I’m told they tried many many things including the wiring (they originally thought it might be that but found nothing wrong with it)
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Maybe I’ve explained it badly...
I bought a genuine Valeo sensor brand new, had it fitted but the fault persisted. Being a good brand neither the first garage nor Hyundai suspected for a second it was a dud sensor, it also gave engine speed data on the live feed when plugged into the diagnostic socket so it seemed fine.


Mate, your explanation was fine.

As electronics techs, both tw2005 and I are thinking what the...... :crazy1:
While its difficult to diagnose from the other side of the world, to have a simple, new, good brand, component fail like this is 1000:1.
Even more curious is that it "gave engine speed data".  :wacko:
If the hyundai Tech saw the data, which is a simple pulse (square wave) he should have noticed if it was being corrupted. Apparently he did not.
@tw2005  you may have a different slant  :cool:
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  • gb United Kingdom
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Conincidence or... just had a drive, about 4 times on full throttle got to about 3k rpm and it just wouldn’t rev any higher as if I’d hit a limiter even though my foots still to the floor. Didn’t happen every time but I’ve never had that before until now.
Grrr  :crazy1:
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Conincidence or... just had a drive, about 4 times on full throttle got to about 3k rpm and it just wouldn’t rev any higher a..

  :crazy2: Coincidence is worse than 1000:1 chance.

Originally: "Once in every 4 or 5 starts the engine just endless turns over without starting. ... runs fine once started."

A number of valid suggestions made here.

RAC guy found crank sensor fault code.   :undecided:

You take it to garage.

up on the ramps.

Put the new sensor in (Valeo) and it wouldn’t start.

 Put the old one back on still wouldn’t start.

 Put the new one back in, still no joy.

After about 30-45 mins of trying to start it suddenly started?

 5 times and it started each time.

You took it to Hyundai (apparently with Valeo still installed)


 Valeo sensor brand new, had it fitted but the fault persisted.
it also gave engine speed data 

they had [another] one in stock, hey presto it then worked fine.


Now a problem occurs that is similar to other reported crank sensor faults


got to about 3k rpm and it just wouldn’t rev any higher


Highly likely it is the same fault  reoccurring and its not THE crank sensor
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  • gb United Kingdom
    Bristol
Exactly. Any money Valeo will text the sensor and tell me it’s fine.
Error codes read ‘Fuel pressure high’ and also ‘Fuel pressure low’
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  • au Australia
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Exactly. Any money Valeo will test the sensor and tell me it’s fine.
Error codes read ‘Fuel pressure high’ and also ‘Fuel pressure low’

A fuel pressure issue also fits original symptoms. Fuel line pressure is regulated by a valve on the pump courtesy of data to and from the ECU and a sensor on end of fuel rail.

As a matter of interest, especially re that sensor, has anyone checked your fuel quality? Any diesel bug, present or past deposits clogging filters ( in tank and in-line)?
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anything