1989 Plymouth acclaim bad idle, no power, sucking sound. I have gone over the vacuum system andfixed all the leaks, i believe. New egr and map sensor. When it wil start it makes a suking sound from the throttle body. Iac sucking air??

possibly a bad intake manifold gasket. you can check for leaks by spraying some carb cleaner around the manifold area while it is running. do this on a cold engine though. if the idle changes or engine revs while spraying, there is your leak. btw, cold engine to reduce the risk of fire. you don';t want to go spraying flammable liquid on a hot engine.

PCV was checked and clear. I have tried spraying butane around the whole throttle body, intake area, vacuum lines,and do not notice a change. I will try carb cleaner specifically on the manifold. I still have a feeling though it's something else. It has to be an air/gas ratio issue.

OK, I removed the intake and exhaust manifolds and replaced the gaskets. The car STILL won't idle/run. I have now ordered a new Throttle Position Sensor, as I took some readings with a voltmeter and it seems to be faulty. Any other pointers would be appreciated. All hoses have been gone over and look good or replaced.

I replaced the Fuel Injector, still waiting for the TPS to arrive, still won't run.

OK, to all the supposed 'CAR GURUS' --- why no one suggested makes me question this site. It took the guys on the CORVAIR website exactly about two minutes-- ANYWAY, the problem with my Acclaim not running was all because of a clogged catalytic converter!! No thanks to this site===