I've got three Mk2 Jetta DZLs - all with A/C and pwr str.No probos with the belts.And all my pullies are clean.But have read of some folks having various troubles before.
Sounds like you may have a bad coolant temp sender telling the car it's warm when it isn't. Check the resistance on it when cold.
I purchased a new belt, and installed it to get the car someplace where I could take a better look at the belt setup, and it was WAY shorter than the belt that was on there. I moved the alternator almost 2 inches down to fit this new belt. Im thinking this belt problem was a wrong application V-belt from the beginning. It was on there when I got it, and looked pretty new with no cracks or anything, but was quite a bit longer than what turns out to have been the stock belt length.Im going to take a better look at it tomorrow and make sure, but maybe I won't have this same problem.
Nice job! I am glad you made your own simple tensioner (that works) instead of the VW Mickey Mouse tensioner.
Quote from: JamesT on March 01, 2012, 09:29:59 pmSounds like you may have a bad coolant temp sender telling the car it's warm when it isn't. Check the resistance on it when cold.Thanks for this post!I didn't have a volt meter with me, but I did a quick experiment. When the car was sitting after being driven a couple hours before, and after it cooled down, I pulled the temp lead from the end of the head, and the glow plugs started working every time I turned the key! I plugged it back in, and they stopped. I left it disconnected for now, but that sensor must definitely be bad. Engine was stone cold. I thought this might affect my fan coming on, but that still does that, so it must be more of a wiring issue behind the dash I have to trace.