LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Stumble at idle when a/c is turned off?

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Old 10-06-2004, 11:20 AM
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Stumble at idle when a/c is turned off?

Hey guys when i have my a/c running while im sitting at a light and then i turn my a/c off, the car stumbles pretty bad. It goes away though if i put the car into neutral and then back into drive. My volts also drop pretty low during this and while im making low speed turns in like a parking lot. Any suggestions....battery...alternator .....help
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Old 10-06-2004, 01:51 PM
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Re: Stumble at idle when a/c is turned off?

Have the battery load tested, if the batt is good then check voltage at the battery with the car running, should be around 13.8~14.2... If not then its the alternator.. Or it could me the IAC.... Also, check for vacuum leaks...
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Old 10-06-2004, 03:45 PM
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Re: Stumble at idle when a/c is turned off?

AutoZone does this testing right?
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Old 10-07-2004, 12:16 PM
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Re: Stumble at idle when a/c is turned off?

ttt...I just got the battery and alternator tested and they both were good.
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Old 10-07-2004, 01:07 PM
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Re: Stumble at idle when a/c is turned off?

check ur compresser out maybe its going south ? and causing the problems
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