I have a 2002 Jetta TDI. What the car does is going along dow the
road, it stops allowing revs. I can mash the gas and the engine stays
at idle, no matter what. I have to turn the car off then back on to
continue on my trip. I have taken it to the dealer twice and the first
time found nothing wrong. The second time they checked the computer
and said it was the TPS. I call to see how much one is so i can do it
myself, and they tell me the diesel in my jetta doesn't have a TPS.
The problem is the dealership can't give me a straight answer and i
just want to know whats wrong.

Vanimal

Your vehicle ooperates by what's known as "drive by wire" - the accelerator
has a potentiometer in the accelerator pedal that measures the position and
feeds to the computer, which in turn adjusts the fuel injection (in fewer
words, there's no accelerator cable). Sounds like the potentiometer has an
intermittent problem and the computer's not getting a signal. That may be
what the dealer was referring to by the TPS (TPS could mean throttle
position sensor). Check over at www.tdiclub.com - someone in that group will
know what needs to be done (probably replacement of the accelerator pedal).

<vanimal00000 (AT) yahoo (DOT) com> wrote