My cars does not go over 60 mph it is a vw passat tdi pd sport auto/trip and it has done on the clock 150,000 miles. I have changed the (mass air flow meter). It did not make any different to the engine can any one plz help me to slove the problem and thank you.
p.s plz plz plz help me because i am go on a holiday. Can anyone email me back on this plz fanwari@hotmail.co.uk

Peter Taylor, April 2007

I had a partial loss of power (1.9 tdi). Dealer said either needs a new turbo £1500+ or a new bypass valve (whatever that is?). Fortunately it was the valve, replaced and it OK (cost £170 though)

rd, January 2008

I had the same problem. It was the engine's internal tempurate sensor. The sensor was faulty and as a result was thinking that the engine was about to blow and therefore was cutting power by half. It took my dealer three visits to diagnose it.

dps, August 2007