1990 Chevrolet Beretta High rev idle

1990 CHEVROLET BERETTA
107,000 MILES • 3.1L • V6 • FWD • AUTOMATIC
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Eratic high reving idle like pistons want to pop out of engine with a kind of chanking sound
Jul 21, 2015 at 4:38 AM
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HMAC300
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chanking sound? lol.... try cleaning throttle plate on both sides and iac hole with choke cleaner then look for a vacuum leak like hose off broken/etc. one that likes to break is large one on top of throttle body. then finally scan for codes if nothing else is found.
Jul 21, 2015 at 6:04 AM
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Cleaned throttle body and plate and iac, checked for broken vacuum lines everything under hood looks good Cant check codes because battery was disconnected and there is no drive time after reconnection of battery I appreciate your opinion and advice thankyou
Jul 21, 2015 at 11:58 AM