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S80 '98-'06 / S60 '00-'09 / V70 & XC70 '00-'07 General Forum for the P2-platform S60 / V70 / XC70 / S80 models |
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v70 2.5T engine judders when acceleratingViews : 1417 Replies : 14Users Viewing This Thread : |
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Oct 7th, 2019, 22:52 | #1 |
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v70 2.5T engine judders when accelerating
Please Help!
I've a 2007 V70 2.5T, 110K. When accelerating, particularly up hill or under load, the engine judders and the car won't accelerate. Once it was so bad that RPM decayed (eng warning light came on) and engine continued to run rough at Idle. Code said misfire on 2 x cylinders. 2 x coil packs replaced, but no difference. Issue has worsened in last 20K. Can anyone suggest remedy? Local garage is at a loss as fault codes have not come on since but still same old problem. Thanks |
Oct 8th, 2019, 00:09 | #2 |
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Im fairly sure one of the massively knowledgeable chaps on here will help out with volvo specific advice, but...
Wife's car had a misfire recently and it turned out to be the leads. You could hear a ticking sound as it discharged. If you know what cylinders it is, you could swap a couple of leads over and give it a try (or wait until its dark and try to see it). Odd that the code hasn't come up again. |
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Oct 8th, 2019, 14:55 | #3 |
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engine juddering
you need to go to a garage which has vida software to diagnose the problem properly
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Oct 9th, 2019, 21:31 | #4 |
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Hi!
you mention coils replaced, but what about spark plugs? I would suggest changing all spark plugs. How much mileage do you have on the spark plugs?
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Oct 11th, 2019, 21:48 | #5 |
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Oct 11th, 2019, 21:50 | #6 | |
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Quote:
Thanks |
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Oct 11th, 2019, 22:15 | #7 |
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There is another thread somewhere asking about volvo garages near Peterborough. I know it's a trek across the Fens, but I went to Wright's in Attleborough the other day and I was very happy with the service and what they were telling me.
There may be someone closer, but these are an independent and I came away trusting that they knew what they were doing and wouldn't rip me off. Might be worth a trip. I had them plug mine into Vida and run me through the results. There is also a guy on here called Cherished5. I bought the Vida and dice from him and will get my computer sorted soon to get it up and running. You could have a bash yourself if you're that way inclined. Last edited by HankScorpio; Oct 11th, 2019 at 22:25. |
Oct 11th, 2019, 22:20 | #8 |
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hasn't the garage got a oscilloscope so you can see if it is the coils or plugs,
The codes do not mean that that part has failed , it could be the wiring loom connecting to that part, Dave Last edited by davebb; Oct 11th, 2019 at 22:23. |
Oct 11th, 2019, 23:50 | #9 |
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do a compression test yourself and inspect the leads and plugs while you are at it.
if you can change plugs you can do a compression test - DIY
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Oct 12th, 2019, 07:19 | #10 |
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Many thanks for the info guys; really helpful. I'll follow up and see where it gets me.
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