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Re: Iac maybe?
My first thought would be to put back in your old IAc (idle air control sensor) but make sure you clean the area were it seats up against on the throttle body, sometimes carbon can build up not letting it seat good, also the Throttle position sensor can go bad causing it to rev up a little, just recently on my 91 TBI it was idling up higher than normal,turns out that the hard black vacuum line going to map sensor, was cracked, and letting air in, you might also make sure the wires are plugged in good to the map sensor, sometimes the little rubber boot will keep it from going all the way in,
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