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cleaned IAC ,WILL NOT STAY RUNNING

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cleaned the IAC and now car will not stay running ? it is a 88 spfi 5sp d/r wagon,all vacuum lines hooked up ,all wires pluged in , it runs good as long as you hold the gas pedal down

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this i what i did , the problem may have been is i used another one ,that looked good and cleaned it good , put it on and no go , sooooo i cleaned the old one and put it back on , still idles like before , but aleast i can drive it :-\the other iac was from a same year car ? either it is bad or something else

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Have you checked the intake manifold gaskets for a leak? They could be leaking coolant, air, or both, into the intake.

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Is it the wrong kind of IAC? I think you need a 3rd one and are on the right track.

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