Whats Wrong with My 1.9td 05 Transporter?

[Andi Millson]

Hi all. I am deeply confused.

All of a sudden, my newish transporter 2005, only 27,000 miles has started going extremely slowly. Its as if the turbo isn't kicking in, although the turbo is definitely still working. I have changed the the MAP sensor on the Turbo, the Mass Air Flow sensor, and even cut the DPF out (and now put it back in again!) I have changed the fuel filter and the oil, but there is still a consistently low power, as though the cpu is doing something, but there are no fault codes?????

All I can think of is fuel pick up problems, injector pump or injectors, although with on 27,000 on the clock it doesn't seem likely.

My next step is to use a new machine to blow coloured smoke through the turbo system to check for any leaks I may have missed.

Any ideas would be appreciated as this is becoming a nightmare!

Thanks

Andi

[kenney]

Hi have you measured the turbo pressure?and what are the readings for the MAF?

[touche]

diesel filter and tandem pump for starters maybe, especially if it is worse at light throttle

[Vagnum]

have you checked the vacuum pipes and the vacuum pipe on the waste gate on the turbo