A3 2.0 TDI 140, turbo/boosting problems

[Dom29]

hey all

My a3 is very strange sometimes itll have loads of power other times it wont, the turbo does hiss quite a lot but heard that was common with these models?

Anyway, say i have a car full and am going up a hill the turbo will really stuggle and on rare occasions it will cut out all together until i turn off the car completely and start it up again.

Ive tried to see if it makes a difference when the engine is warm but it appears to be random.

Any ideas ? thanks

 

[NHN]

The turbo's internal parts are getting stuck & causing overboost issues & thus gives you limp mode, so if this turns out to be the case, more than likely is, then 2 options, remove & clean or swap out for new.

Depending where you are, we could do this for you.

Also got a brand new turbo sitting in a box to sell.

 

[Dom29]

How much are we looking at for the turbo?

 

[NHN]

I'll PM price for ours.

Beware of cheap units refurbed with Chinese inferior internals, that simply are not up to the task of the boost levels.

 

[Dom29]

Couldnt i just use something like this ?
Innotec Diesel Turbo Cleaner Kit-Solves Your LIMP MODE on all VNT Turbochargers | eBay

 

[NHN]

Forget it, its a temp solution that doesn't work very well tbh, only way to guarantee good results is to remove, strip, clean & refit or fit a new one.

I've done number of these & the grime I've cleaned of them internally, would no way come of with this stuff.

 

[Mikemc]

As NHN said, how many miles have you done? Has the turbo been changed before in its history? Might be worth a new or recon on instead of a clean?

 

[Dom29]

the car has done 106k , i got it on 103k so dont know to much about the history!