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Grabbing and "stuttering" when driving, surging at stop sometimes

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive P2 platform cars sold as model years 2001-2007 (North American market year designations).

2001 - 2007 V70
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2004 - 2007 V70 R

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MONeill
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Joined: Mon Mar 20, 2017 8:22 pm
Year and Model: 2006 V70
Location: Vancouver Island

Grabbing and "stuttering" when driving, surging at stop sometimes

Post by MONeill »

V70 Turbo

My 2006 V70 seems to intermittantly stutter (quickly) when driving along the highway at cruising speed. I also notice that it occasionally surges a couple of times when stopped. I feel like something is wrong with transmission but the fluid is clear and clean and no codes are showing. There is no noticable drop in RPM and it is just like it is slipping on ice briefly. The behaviour is somewhat consistant. The car only has 128,000km on it so I just think it cannot be the transmission but ....................

My mechanic says we could try a transmission fluid flush but really it seems like that is silly given the fluid is clean and clear! Any ideas as to what simple things I could try first. I heard it could be fuel pump or failing ETM? The test for ETM that I heard did not prove any result.

I suspect transmission of course as I think most would. But I cannot believe that with only 128,000km! Any ideas would be appreciated. Could a flush on clean fluid be a likely solution? My next step is to bring it to a transmission shop but reluctant as all my experiences with these guys were not very positive.

Appreciate the help and thanks for looking.

MONeill

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matthew1
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Post by matthew1 »

Welcome to MVS. Do you know the history of the car? Here's the worst case scenario: you just bought it, and the guy before you did a trans fluid flush to make the fluid look and smell good for the sale. And it was the first/only fluid change the trans has ever gotten.

However if RPMs don't rise when the slipping occurs, chances are it's not the transmission.

Discount an ETM theory. The problem ETMs were years before 2006.

I'd look at air, spark and fuel. Air filter, spark plugs, fuel filter. The basics first.
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MONeill
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Joined: Mon Mar 20, 2017 8:22 pm
Year and Model: 2006 V70
Location: Vancouver Island

Post by MONeill »

Thanks for your reply. Appreciate the forum.

I will take your advice and follow up with posts as I move through simple solutions. My bad as I typed 2006 but it is actually a 2004.

Cheers

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matthew1
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Post by matthew1 »

Traditional "problem" ETMs were still in the distant past even for 2004s.

See Stage 0 for a basics checklist.
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Post by oragex »

Well, you mechanic seems both wrong and right. Firstly, can't see how the issue is related to the transmission. So perhaps I'd go to another place next time. However, it is a good idea to replace the transmission fluid with the exact 3309 type. Do not put it on a flushing machine. Google up about thing topic, very discussed.

As for the stutter, it acts like an FPS sensor issue, if your engine happens to have one at the right end of the fuel rail (the FPS for turbo has different number than the FPS for non turbo)

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