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Volvo V50 2.0 stutter

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Old Aug 19th, 2019, 13:54   #1
cdm30379
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Default Volvo V50 2.0 stutter

Hi, had my v50 2.0 rdesign 08 for about 6 weeks. it has a stutter at between 1800 & 2000 revs. I bought a cheap air flow sensor but that made it worse. if unplugged it runs fine. If booting it its fine and when towing caravan its fine too. Should i buy a genuine air flow sensor or anyone experienced anything else with one of these. vin suggests euro 5 engine but i have no sign of a dpf . i have the egr blanking plate but not fitted it yet. any advice or suggestions ? thanks
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Old Aug 19th, 2019, 15:37   #2
benrpatterson
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No answer for you sorry, but my 2007 S40 2.0d has the same stutter... sometimes... i had just put it down to the turbo getting old.
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Old Aug 20th, 2019, 11:25   #3
Paddy94
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Same problem here with my 09 2.0, no DPF. Stutters if you try cruise in the 16-1800 rev zone. Gets REALLY bad if you try to cruise at motorway speeds. Stutters, bucks, kangaroos, etc really badly at 22-2400 RPM.

Makes going anywhere far a real pain.
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Old Aug 21st, 2019, 23:06   #4
yannickc
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Default air intake valve

I also had a VERY BAD stuttering in my v50 2.0d 2008.

After replacing and testing a lot of thing (even ECU) i discovered my intake valve was closing time to time when accelerating.

I'm pretty sure its not a electrical or mechanical problem.
I "solved" the problem by disconnecting the electrical solenoid that controls the valve. No error messages or problems after disconnecting this. And more importantly : no more stutter!

My only conclusion to this problem (in my case) this is a bug in the software.
I did many research on it, and it takes me months to (by coincidence ) find someone who "knows" my problem. It was an Volvo mechanic and he told me my solution was used on many 2.0d's at that time.

A real reason or solution to this problem was never found for as far he know... But he also thinks its a bug that with some 2.0d's appear, and others never ...


What i also notice was that the problem mainly appears when driving economical , or for a long time on the highway. From the moment you want to accelerate from low speeds again, it happens again...

Then when i drive sportive for a time, the stuttering stops.

Last edited by yannickc; Aug 21st, 2019 at 23:35.
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Old Aug 21st, 2019, 23:39   #5
Paddy94
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Quote:
Originally Posted by yannickc View Post
I also had a VERY BAD stuttering in my v50 2.0d 2008.

After replacing and testing a lot of thing (even ECU) i discovered my intake valve was closing time to time when accelerating.

I'm pretty sure its not a electrical or mechanical problem.
I "solved" the problem by disconnecting the electrical solenoid that controls the valve. No error messages or problems after disconnecting this. And more importantly : no more stutter!

My only conclusion to this problem (in my case) this is a bug in the software.
I did many research on it, and it takes me months to (by coincidence ) find someone who "knows" my problem. It was an Volvo mechanic and he told me my solution was used on many 2.0d's at that time.

A real reason or solution to this problem was never found for as far he know... But he also thinks its a bug that with some 2.0d's appear, and others never ...


What i also notice was that the problem mainly appears when driving economical , or for a long time on the highway. From the moment you want to accelerate from low speeds again, it happens again...

Then when i drive sportive for a time, the stuttering stops.
An interesting fix, that's for sure! Tempted to try this myself, do you know where the solenoid is? A picture would be great!
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Old Aug 22nd, 2019, 06:38   #6
yannickc
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Quote:
Originally Posted by Paddy94 View Post
An interesting fix, that's for sure! Tempted to try this myself, do you know where the solenoid is? A picture would be great!
Here it is, near to the alternator :

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