Author Topic: Slight juddering at low revs  (Read 2477 times)

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  • gb United Kingdom
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Slight juddering at low revs
« January 15, 2018, 07:48:16 »
Hello!

This is my first post here. I just purchased a 2012 plate i30 1.6 CRDi with around 55k miles on the clock. Sadly it immediately had to be fitted with a new clutch and fuel filter.. but that's been done and sorted now.

After using it for a proper commute I've noticed that I can't sit at 30mph in 4th gear without the engine juddering slightly. This is around 1,150/1,200 rpm. What I'm wondering is whether this is the sign of a potential issue or if it's just the gear ratios?

In my previous cars (a 2014 diesel 1-series and Toyota Aygo petrol) they'd happy sit in 4th at 30mph. Sure if I put my foot flat to the floor nothing would really happen unless I downshifted.

Any thoughts? After my initial disappointment at the car needing a new clutch—which the garage paid for—I'm a little jumpy at every little thing I notice so forgive me if this is expected of this car.

All help appreciated :)


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Re: Slight juddering at low revs
« Reply #1 : January 15, 2018, 11:53:47 »
When i had my crdi i could only use 4th at 35 mph plus.
So what you have is probably correct.

As an example, In my petrol i can be in 6th at 35 mph!
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  • gb United Kingdom
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Re: Slight juddering at low revs
« Reply #2 : January 15, 2018, 12:02:48 »
That's exactly the same as me. Good to know it's not just me :) Crazy how different the gear ratios can be!
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  • dk Denmark
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Re: Slight juddering at low revs
« Reply #3 : January 15, 2018, 12:50:33 »
If I'm below 1300/1400 revs in 4th gear it will behave the same. It's not an error, it's a characteristic  :mrgreen:
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Re: Slight juddering at low revs
« Reply #4 : January 15, 2018, 15:23:52 »
Same here. I have a 50k zone near home and I often have to take it almost to 18k in 3rd before easing it into 15k at the 50k. That range between 3rd and 4th is always where I need to rev higher than I'd like.
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Re: Slight juddering at low revs
« Reply #5 : January 15, 2018, 15:35:09 »
18K!  :Shocked: That won't keep you in the 4's  :crazy1: :rofl: :rofl:
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Re: Slight juddering at low revs
« Reply #6 : January 15, 2018, 18:39:38 »
have to remember, this is a small motor at only about 96 cubic inch or 16,000cc, but it does a fantastic job!
also all the different diesel's are set up and geared different, the cars are also different weights. if your in a flat area no hill's, might get away with that low rev, but if she shudders just shift to a lower gear as your lugging it. there is no problem .

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  • au Australia
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Re: Slight juddering at low revs
« Reply #7 : January 15, 2018, 23:07:44 »
have to remember, this is a small motor at only about 96 cubic inch or 16,000cc, but it does a fantastic job!
also all the different diesel's are set up and geared different, the cars are also different weights. if your in a flat area no hill's, might get away with that low rev, but if she shudders just shift to a lower gear as your lugging it. there is no problem .

Lakes, you gave it 1 too many zeros -1600 cc not 16,000 cc.  :lol:
 Funny the difference  a "0" makes . Imagine that though,  a 16 litre 4 cyl   :cool:
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Re: Slight juddering at low revs
« Reply #8 : January 16, 2018, 01:08:07 »
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Re: Slight juddering at low revs
« Reply #9 : January 16, 2018, 02:56:30 »
4 x pots  each the size of 4 l ice cream tubs ,   :crazy2:  :happydance:  :twisted:
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  • gb United Kingdom
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Re: Slight juddering at low revs
« Reply #10 : January 16, 2018, 04:40:27 »
Thanks everyone appreciate the replies :)
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Re: Slight juddering at low revs
« Reply #11 : January 16, 2018, 14:58:36 »
Thanks everyone appreciate the replies :)

Hi ollie,
Sometimes posts veer off a little  :lol:
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Re: Slight juddering at low revs
« Reply #12 : January 16, 2018, 16:13:34 »


Thanks everyone appreciate the replies :)

Hi ollie,
Sometimes posts veer off a little 

So so true........
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