stlunatics2oo3 Posted June 20, 2004 Report Share Posted June 20, 2004 okay first off i am not totally for sure what is wrong with my car . it idles real high like say 1200 and it goes up by itself in park in drive it will stay at like 890 or so but when i drive it for like a block the car fixes its self so i am not sure what the problem is DO you have any ideas? i have changed the IAC,TPS,plugs,wires,pcv valve brian p and i have thought maybe the ecm is goin to crap but maybe one of yall know what it is so help me out oh yeah its a 89 cutty 2.8 automatic thanks Jeremy Quote Link to comment Share on other sites More sharing options...
Guest TurboSedan Posted June 20, 2004 Report Share Posted June 20, 2004 vacuum leak somewhere...probably the lower intake gasket Quote Link to comment Share on other sites More sharing options...
stlunatics2oo3 Posted June 20, 2004 Author Report Share Posted June 20, 2004 yeah i had that feeling so has any one changed the lower intake manifold gasket and if so what do i need besides tools i mean like what other gaskets and some things i should look for watchout for well let me know plus some one tell me how to exactly do this please some one help thanks Jeremy Quote Link to comment Share on other sites More sharing options...
mfewtrail Posted June 20, 2004 Report Share Posted June 20, 2004 vacuum leak somewhere...probably the lower intake gasket That's what I told him. Quote Link to comment Share on other sites More sharing options...
Z34door Posted June 20, 2004 Report Share Posted June 20, 2004 im actually doing mine today........ mine blew the gasket in the front side of the upper plenum. start the car.... spray it with carb cleaner and see if it sucks it in.. its the easiest way to tell if its a bad gasket. Quote Link to comment Share on other sites More sharing options...
Robby1870 Posted June 20, 2004 Report Share Posted June 20, 2004 1200 isnt that high for a cold start....... Quote Link to comment Share on other sites More sharing options...
god910 Posted June 20, 2004 Report Share Posted June 20, 2004 im actually doing mine today........ mine blew the gasket in the front side of the upper plenum. start the car.... spray it with carb cleaner and see if it sucks it in.. its the easiest way to tell if its a bad gasket. Make sure you have a fire exstiguisher handy. Quote Link to comment Share on other sites More sharing options...
stlunatics2oo3 Posted June 20, 2004 Author Report Share Posted June 20, 2004 i know robby but it seems it likes to increase the rpm all by itself so i am not sure what it is but i am gonna try the carb cleaner thing soon i am at a friends open house so thanks for the info Jeremy Quote Link to comment Share on other sites More sharing options...
stlunatics2oo3 Posted June 21, 2004 Author Report Share Posted June 21, 2004 well i did the carb cleaner test and no change in idle , plus i did some coolant type test to check the internal gaskets you like put this pump type thing on where the radiator cap would be and you pump it up to 11psi and then if the gauge doesn't move it means the gaskets are good . so i am not sure whats up with the car any suggestions so i know now the gaskets are good . now my question is would the computer be bad and still run okay ??? help me Quote Link to comment Share on other sites More sharing options...
stlunatics2oo3 Posted June 21, 2004 Author Report Share Posted June 21, 2004 update : well the problem is still there but i heard something i never did today i heard the cat. converter makin a rattle noise i am not sure if that would cause the problem with my car or not so let me know thanks Jeremy Quote Link to comment Share on other sites More sharing options...
mfewtrail Posted June 26, 2004 Report Share Posted June 26, 2004 Jeremy, update this w/ what you found!..That way, if anyone else has these issues, they can at least check on *certain* things. Quote Link to comment Share on other sites More sharing options...
stlunatics2oo3 Posted June 26, 2004 Author Report Share Posted June 26, 2004 well i found out my plenum had a crack in it and i cut the car off and i had some power again so yeah Jeremy Quote Link to comment Share on other sites More sharing options...
mfewtrail Posted June 26, 2004 Report Share Posted June 26, 2004 well i found out my plenum had a crack in it and i cut the car off and i had some power again so yeah Jeremy substitute "cat" for "car" above. 8) Quote Link to comment Share on other sites More sharing options...
stlunatics2oo3 Posted June 26, 2004 Author Report Share Posted June 26, 2004 yeah i cut the cat off my bad lol thanks matt was a long ass day lol Quote Link to comment Share on other sites More sharing options...
mfewtrail Posted June 26, 2004 Report Share Posted June 26, 2004 yeah i cut the cat off my bad lol thanks matt was a long ass day lol No problem, I do that sorta thing A LOT ..I just go back and edit my posts quickly if I catch my mistakes :oops: Quote Link to comment Share on other sites More sharing options...
jimmy91444 Posted June 29, 2004 Report Share Posted June 29, 2004 i had the same problemes, changed almost everything with no effect. This afternoon i decided to change the ecm. VOILA" run like a charme so far. kept my prom . 89 cut sup int 2.8lt Quote Link to comment Share on other sites More sharing options...
stlunatics2oo3 Posted June 29, 2004 Author Report Share Posted June 29, 2004 well mine was the crack in the plenum and my car runs like a dream now cause the one i put on i cleaned real good lol Quote Link to comment Share on other sites More sharing options...
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