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 passat tdi boost probs

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miracleworker
Blitzen Virgin
Blitzen Virgin


Male Number of posts : 9
Age : 47
Location : Even deeper into the Valleys
My Ride(s) : golf mk2 pending vr6 insertion
Registration date : 2012-08-02

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PostSubject: passat tdi boost probs   passat tdi boost probs EmptyWed Aug 29, 2012 8:51 pm

Hey Sphincters,
by now if anyone has seen any of my posts, you will know i'm still eternally stuck on sourcing parts for my mk2 vr conversion, (part;y because i dont really know what i'm looking for and.. ye i know i'm not really trying hard enough !! but meanwhile me passat is starting to show signs of tiredness. basically the turbo seems to give up (no rev range.. just nowt from beginning to end (not that it gets to the end!!)) then is absolutely fine and will work until the next time. have read up a little, possibly not terminal... blocked veins, boost probs ?
any clues, diagnostic showed nothing specific...
cheers
Matt
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Road Rage
DBS Old Timer
DBS Old Timer
Road Rage

Male Number of posts : 4830
Age : 46
Location : Highbridge
My Ride(s) : 1972 Bay; Shitroen C4
Registration date : 2008-04-28

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PostSubject: Re: passat tdi boost probs   passat tdi boost probs EmptyWed Aug 29, 2012 9:01 pm

the variable vanes block with soot and stick so no turbo
egr can stick and cause this too
what codes did you get and does the fault reset if you turn the ignition off and then back on?

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Sometimes even Volkswagen get it a bit wrong the first time

Even split screens had high indicators Wink

passat tdi boost probs B9d2fd24
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Shamrockez
DBS Old Timer
DBS Old Timer
Shamrockez

Female Number of posts : 2047
Age : 35
Location : Curry Rivel, Somerset
My Ride(s) : 98 New Beetle, 1958 Bug, 1966 Split, 2006 T5, 71 Bug, 72 Bay and 61 Split.
Registration date : 2006-11-21

passat tdi boost probs Empty
PostSubject: Re: passat tdi boost probs   passat tdi boost probs EmptySat Sep 01, 2012 8:29 pm

It's unlikely to be anything major it it goes back to normal on a restart.

Could be any of the following:

MAF sensor
N75 valve
EGR valve
Sticky vanes in the turbo.


My money would be on the MAF tbh.
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PostSubject: Re: passat tdi boost probs   passat tdi boost probs Empty

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