Volvo V50 2.0D oscillating rpm when driving

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Dcunning35
TwoWaves
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Re: Volvo V50 2.0D oscillating rpm when driving

Post by Dcunning35 » Wed Feb 22, 2017 6:33 pm

Looking at thoose clutch pressures it looks like a damper issue ,did the fluid look burnt or discoloured ? Good luck with it anyway volrem .
Danny

Dcunning35
TwoWaves
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Re: Volvo V50 2.0D oscillating rpm when driving

Post by Dcunning35 » Mon Mar 13, 2017 8:46 pm

Have you had any luck finding the root cause of this yet volrem , ive just had a 2010 galaxy with the same issue , I replaced the clutch and damper assembly car was perfect so being curious I disassembled the old unit and found some of the springs stretched and both the clutch packs badly burnished.
The vehicle had done 50000miles without the fluid service.
Danny

volrem
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Re: Volvo V50 2.0D oscillating rpm when driving

Post by volrem » Tue Mar 14, 2017 9:21 am

Hi

Car is still sitting and waiting for owner to pick it up. I won't be replacing clutch myself so cannot check it afterwards.

Dcunning35
TwoWaves
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Re: Volvo V50 2.0D oscillating rpm when driving

Post by Dcunning35 » Tue Mar 14, 2017 10:31 am

No problem volrem , just thought id share findings .
Danny

volrem
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Re: Volvo V50 2.0D oscillating rpm when driving

Post by volrem » Tue Mar 14, 2017 12:55 pm

Yes thanks for that and for all previous info also.

Just got an update that this transmission has been "fully" repaired some time ago. Now it seems that used transmission will be installed.

tode
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Re: Volvo V50 2.0D oscillating rpm when driving

Post by tode » Sat Mar 25, 2017 5:10 pm

hi volrem, sorry if I'm late, I think isn't a problem from automatic transmission, those engines have got a problem with turbo' s VNT. It usually don't work fine and create a against pressure through EGR valve with a pulsed wave.
If you want to do a test disconnect EGR valve or plug it and test the car.
But you rember the problem start from turbo and not from EGR valve.
Regards.

volrem
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Location: Estonia

Re: Volvo V50 2.0D oscillating rpm when driving

Post by volrem » Sat Mar 25, 2017 6:11 pm

Hi tode


I don't have that car anymore but I did some related tests before.

EGR disconnected - no change
Turbo vacuum disconnected - no change
EGR and turbo vacuum disconnected - no change

Transmission adaptation made big difference.

Anyway it's on transmission replacement and then comes back to me for a check.

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