I've got an intermittent issue with my 99 Jetta. It drives fine, but idling, it pulses from ~800RPM to ~500RPM (and sometime stalls). It doesn't happen all the time, but seems to happen more often when the engine is cold or there's an electrical load (headlights, loud stereo, power windows, etc). I've done a tune-up (oil w/ filter, top off fluids, spark plugs, wires, and distributer cap). I went to AutoZoo and PepNuts, and they suggested a bad ground or alternator/battery fault. I had them run a free check on the battery/alternator which turned up fine, but I replaced the alternator and drive belts anyway because I'm stubborn. Needless to say, it's still idling like poo and I don't know what to try next. Any ideas? :) -Dan
- posted
16 years ago