Audi A6 Turbo problem

[Angie]

I thought i would put this problem on here, as i know a alot of you have second cars and/or have mechanical knowledge. I have also put this on the Audi forums. I need as much help as i can get (as soon as I can get!) as this is my work car and i need it to be working asap.

The car

I have a A6 1.9 tdi 110bhp with a chip making it 138 bhp. It has done 149,000 miles with Fsh and has worked fine until recently.

The Problem is as follows:

Sometimes from start up the turbo does not work and will not work until you turn it off, leave it a couple of seconds and start it again. This may take several attempts. Once the car starts and the turbo is working it keeps on working for duration of the journey. Conversely, if the turbo isn't working, it will not start working during a journey until it has been switched off as above.

I have had a MAF problem before, but this seems to be different.

(But it does seem to be Electrical.)

 

Oh- and I have taken the chip out of circuit too, but the problem still existed, so it's not down to that.

 

I know there is a non-Supra section, but I do need any info that people might be able to give me as soon as possible, so would it be possible to leave this thread here for a couple of days before moving it, please?

 

Angie.

 

 

Please Help

[Wez]

My mate has a similar issue with an A4 1.9tdi which I was going to post up.

 

Only difference is my mates turbo seems to only come on boost when the car is cold, once its warmed up it doesnt seem to generate any boost at all and the car feels flat.

 

Its also standard.