Help diagnosing random intermittent juddering and dealer has no idea what's causing it

Forum for Engine, Exhaust, Drivetrain, ECU
Flipjango
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Joined: Thu Nov 15, 2018 2:47 pm
Qashqai Model: Mk.2 Qashqai Facelift - J11b (2017–2021)

Post by Flipjango »

We have a 2014 DCI Acenta Premium diesel automatic, which we bought second hand in June 2017. Soon after we bought it we started to feel a strange intermittent engine judder. There was no consistent reason or time that it happened - not because the engine was cold or anything like that. The most consistent thing was that it seemed to happen around 40 mph, and that it seemed that revving hard would make it stop for a while. But sometimes it was when the engine was cold, other times when it had been used already, sometimes in traffic going slowly, other times at higher speed, sometimes hills, sometimes flat etc. We took it to the local garage who replaced the battery but when that didn't work they said to take it to the dealer. The dealer recommended replacing the fuel filter, which we did. No improvement. The judder didn't really cause any problems, so we ignored it until the air con failed and we had it in at the dealer anyway, so we asked them to have another look. They couldn't find anything other than the air con condenser that needed replacing. We then started having problems with the remote keys failing. Replaced the batteries (in both keys), worked again for a while, then stopped working again (getting 'no key recognised' error messages and couldn't open car doors). Judder still causing problems. Then started getting an intermittent 'auto stop start' error which resulted in the car just randomly stopping on occasions when driving. Back to the dealer who said there were a few faults showing, and said they'd try replacing the glow plugs to begin with. Auto stop start working better but judder getting worse and some journeys it feels like its about to stall all the time (the fault seems to be based on the journey, nothing else- some journeys are terrible, others are fine). Back to dealer who then replaced the EGR valve. No improvement whatsoever. Now getting hugely expensive and really fed up. Car still juddering completely randomly, sometimes very badly, but other times running beautifully. Keys still randomly failing. We also have a random intermittent tyre sensor error. The only thing I have noticed has improved things was that it seems to run better when the tank has been filled up. Otherwise can't work out what causes the problem. Can anyone shed any light on this? Its costing us a fortune and still isn't working properly. Really fed up and can't afford to keep giving money to the dealer as they only seem to use the fault codes which clearly isn't helping. Thanks

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MikeGC
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Qashqai Model: Mk.3 Qashqai - J12 (2021+) New Model

Post by MikeGC »

this rings a bell with me but from the Juke forum.
Does the judder occur at 1500rpm ??
That's certainly a "known" thing on the 1.5DCI
March '22 - J12 1.3DIG-T 160 CVT Tekna+ with all wheel drive - Pearl Black
July '19 - J11B 1.3DIG-T 160 DCT Tekna - Vivid Blue
March '17 - Qashqai J11A 1.5dci n-connecta - gunmetal
September '14 - Juke 1.5dci gunmetal ascenta premium (red accent packs)
Flipjango
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Joined: Thu Nov 15, 2018 2:47 pm
Qashqai Model: Mk.2 Qashqai Facelift - J11b (2017–2021)

Post by Flipjango »

I’m not aware that it’s rpm based as it sometimes happens when idling. And equally there will be journeys where it doesn’t happen at all no matter what the revs.
Flipjango
Posts: 11
Joined: Thu Nov 15, 2018 2:47 pm
Qashqai Model: Mk.2 Qashqai Facelift - J11b (2017–2021)

Post by Flipjango »

What is the ‘known thing’ please?
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MikeGC
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Qashqai Model: Mk.3 Qashqai - J12 (2021+) New Model

Post by MikeGC »

Flipjango wrote: Tue Nov 20, 2018 9:07 am What is the ‘known thing’ please?
the 1.5dci judders when accelerating in high gear from 1500rpm
March '22 - J12 1.3DIG-T 160 CVT Tekna+ with all wheel drive - Pearl Black
July '19 - J11B 1.3DIG-T 160 DCT Tekna - Vivid Blue
March '17 - Qashqai J11A 1.5dci n-connecta - gunmetal
September '14 - Juke 1.5dci gunmetal ascenta premium (red accent packs)
Flipjango
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Joined: Thu Nov 15, 2018 2:47 pm
Qashqai Model: Mk.2 Qashqai Facelift - J11b (2017–2021)

Post by Flipjango »

Would this apply to an automatic do you think? And what is the fix? Thanks
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MikeGC
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Qashqai Model: Mk.3 Qashqai - J12 (2021+) New Model

Post by MikeGC »

Flipjango wrote: Tue Nov 20, 2018 10:06 am 1. Would this apply to an automatic do you think?
2. And what is the fix?
Thanks
1. - sorry, no idea but I guess not as the auto gearbox would change down
2. - change down a gear (or two) before accelerating
March '22 - J12 1.3DIG-T 160 CVT Tekna+ with all wheel drive - Pearl Black
July '19 - J11B 1.3DIG-T 160 DCT Tekna - Vivid Blue
March '17 - Qashqai J11A 1.5dci n-connecta - gunmetal
September '14 - Juke 1.5dci gunmetal ascenta premium (red accent packs)
Pandjh
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Post by Pandjh »

I would be thinking of misfire type issues. Try a fuel system cleaner for £15 it might be all you need.
2019 1.3 DiG-T 160 Tekna, black (J11b)
prev 2015 1.2 DiG-T n-tec+, black (J11)
prev 2009 1.5 dCi Acenta, black (J10)
Flipjango
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Qashqai Model: Mk.2 Qashqai Facelift - J11b (2017–2021)

Post by Flipjango »

MikeGC wrote: Tue Nov 20, 2018 10:09 am
Flipjango wrote: Tue Nov 20, 2018 10:06 am 2. - change down a gear (or two) before accelerating
But I'm guessing this wouldn't apply as its automatic, right?
Pandjh wrote: Tue Nov 20, 2018 10:36 am I would be thinking of misfire type issues. Try a fuel system cleaner for £15 it might be all you need.
Unfortunately we've also tried this...twice. Its unbelievably frustrating! I feel like we've tried everything.
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MikeGC
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Joined: Tue Feb 07, 2017 11:50 am
Location: Stockport
Qashqai Model: Mk.3 Qashqai - J12 (2021+) New Model

Post by MikeGC »

Flipjango wrote: Tue Nov 20, 2018 11:13 am
MikeGC wrote: Tue Nov 20, 2018 10:09 am
Flipjango wrote: Tue Nov 20, 2018 10:06 am 2. - change down a gear (or two) before accelerating
But I'm guessing this wouldn't apply as its automatic, right?
Pandjh wrote: Tue Nov 20, 2018 10:36 am I would be thinking of misfire type issues. Try a fuel system cleaner for £15 it might be all you need.
Unfortunately we've also tried this...twice. Its unbelievably frustrating! I feel like we've tried everything.

As I said above
"1. - sorry, no idea but I guess not as the auto gearbox would change down"
March '22 - J12 1.3DIG-T 160 CVT Tekna+ with all wheel drive - Pearl Black
July '19 - J11B 1.3DIG-T 160 DCT Tekna - Vivid Blue
March '17 - Qashqai J11A 1.5dci n-connecta - gunmetal
September '14 - Juke 1.5dci gunmetal ascenta premium (red accent packs)
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