guys My 1990 tt is missing at idle and i have not worked out which cylinder it is yet. once I am doing around 4500rpm it fires on all 6 and goes like stink. And the weirdest thing is that it doesn't do it all the time usually when I have not drove it for a while or if it's cold. It has low Kays on it and when it's not missing it rund smooth as. Any help appriciated. As always Cheers.Parks
could be many things.... vacuum leak, o2 sensor(s), try removing the TPS (the sensor on the right throttle body) just after you start your car, give it 10 seconds let it adjust and plug it back in. Its a start.Also try doing an ECU diagnostics test, it can be helpful and the info on how to do it is found in the tech section under articles, also you will find there o2 sensor diagn. and for a vacuum leak you can find how to make a blow up leak tester.Hope this helpsRegards Max
Common problem >>> >>> pull apart all electrical connectors in engine bay one by one, .... inspect and clean thoroughly.
