slugish a4 1.9 tdi

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looneytoons - 15 Aug 2007 15:59 GMT

i have an a4 tdi 1.9 and it seems to be loosing on acceloraition when i get
to 60 and put my foot down it seems to hold back and slowly speeds up has
any one got any ideas cheers craig

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Chris Bartram - 15 Aug 2007 16:02 GMT

> i have an a4 tdi 1.9 and it seems to be loosing on acceloraition when i get
> to 60 and put my foot down it seems to hold back and slowly speeds up has
> any one got any ideas cheers craig

Unplug the MAF (in the air inlet trunking). If it is no worse with it
unplugged, replace it. Other than that? Get the codes read with VAG-COM.

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looneytoons - 15 Aug 2007 16:33 GMT

just had a mas air unit as i was told that was the problem but no change
but cheers anyway

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Chris Bartram - 15 Aug 2007 17:24 GMT

> just had a mas air unit as i was told that was the problem but no change
> but cheers anyway

In that case, get a code reader (preferably VAG_COM) on it, and look here:

http://forums.tdiclub.com/showthread.php?t=179589

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Bundy - 17 Aug 2007 21:56 GMT

> > i have an a4 tdi 1.9 and it seems to be loosing on acceloraition when i get
> > to 60 and put my foot down it seems to hold back and slowly speeds up has
> > any one got any ideas cheers craig
> >
> Unplug the MAF (in the air inlet trunking). If it is no worse with it
> unplugged, replace it. Other than that? Get the codes read with VAG-COM.

Did you check the vacuum hose which goes to the turbo? I had the same
problem, the hose was damaged by a mounting bolt of the turbo. If not then
maybe the variable nozzel (VNT) inside the turbo is stucked. If it is
stucked I suggest you to let it cleaned before replacing it. You'll find
alot of information on the internet about it.

Al

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