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When air conditioner pump clutches ingage and disengage the RPMs drop up and down... bad gas mileage... stalled once when i was at a four way stop and went to go... when temperature was all the way down and off then it was fine. HeadLights has dimmed in and out while driving.

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Well, lets see...
The engine RPM going up and down when the A/C clutches engage and disengage sounds like it could possibly be caused by an Idle Air Control (IAC) that cannot properly control engine speed.
The headlamps dimming on the other hand, leads me to think that you may have charging system problems - loose cable connections, bad alternator diodes, shorted cell in the battery, etc.
Then again, if the engine is not idling correctly due to a bad IAC, it can cause the headlamps to fluctuate if the A/C is kicking on and off at idle.

So here are my recommendations:
First, get your charging system load-tested. Correct any problems found and see if this fixes your problem with the stalling and the dimming headlamps.
If a load test does not identify any problems with the charging system, try replacing the IAC.

Also please review this article: What Else Could Be Wrong?

Posted on Apr 11, 2011

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I have a 1995 hands civic with a 1.6l vtech. The car idle goes from about 1.5 to about 1 constantly. So basically when I'm in natural the idle won't stay in one spot any solutions?

Posted on Apr 11, 2011

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