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Discussion Starter #1
I have a high millage 2.5 tdi quattro (134k) and it has a bad vibration and is at it's most noticable at 1200 revs.
I have had the car checked out at a dealers and also a diesel specialist and every thing checks out ok. ( I did change the air flow meter as it wasnt 100%)
The fuel pump, recirculating valve, boost valve etc all good.
Timing was 5.8 degrees.
Any Ideas of what else to check?
 

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recently put a new battery in it? try cleaning out the throttle?
 

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Discussion Starter #3
no new battery

dont know how to clean out throttle.

car does have a distince surge when trying to accelerate smoothly, which is most noticable in second gear. (not a power band surge, more like pulling the choke out on a cold petrol engine)
 
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