Question about 2001 Volkswagen Jetta TDI
When I come to a stop or slow down the rpm's drop and my car stalls out. While it is going it runs great. Sometimes when startimg it it has a hard time staying on and even has a hard time going when I give it gas.
sounds like an IAC motor. that stands for idle air control motor. it adjusts throttle to keep at steady speed. could possibly be throttle positioning sensor though. pay attention to see if it does it worse while mashing breaks because if EGR is stopped up it can cause symptoms similar too.
Posted on Dec 10, 2008
The problem in the Jetta could very well be with the ignition coil. I had the same problem for a long time and tried the usual replacing plugs, wires, etc, but nothing seemed to work.
It ended up being the ignition coil which over time, managed to sustain very small cracks. Even a small amount of moisture would cause all sorts of problems.
I replaced the ignition coil and had no problems after that.
Posted on Feb 23, 2009
if it has over 40,000 miles on it change the drive belt and have the alternator tested and also make sure all of the vaccum lines are on and in place
Posted on Mar 06, 2009
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