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A\C Issues running on idle. - 6G Celicas Forums

Topic #90028 7 posts Started by yagamius
I have some issues with the A/C since the rebuild the engine runs fine but I notice that when I start the A/C the revs of the car decrease instead of going up on idle. turn the A/C off and the revs return to normal. everything works fine and the A/C cools up.

don't know what could be wrong a relay or something ?


1994 ST Celica --> no swap --> 7A rebuild1974 Mustang --> Almost Restored
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QUOTE (yagamius @ Jul 3, 2013 - 9:24 AM) *
>I have some issues with the A/C since the rebuild the engine runs fine but I notice that when I start the A/C the revs of the car decrease instead of going up on idle. turn the A/C off and the revs return to normal. everything works fine and the A/C cools up.

don't know what could be wrong a relay or something ?

There should be a relay that increases the RPM at idle when the A/C is on.
Or maybe the idle speed control valve? You can try to clean it, maybe it's a bit or completely stuck.

This post has been edited by onnaj: Jul 3, 2013 - 12:55 PM

My 7AFE to 4AGE 20V Blacktop conversion!
Its not a relay.
There is an ac idle up valve for that. Check to see if yours is connected.

15PSI - 30MPG - Megasquirt Tuned
I believe the valve is adjustable? I remember messing with mine a long time ago.
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QUOTE (lagos @ Jul 3, 2013 - 11:56 AM) *
>Its not a relay.
There is an ac idle up valve for that. Check to see if yours is connected.



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QUOTE (Spider77 @ Jul 3, 2013 - 2:22 PM) *
>I believe the valve is adjustable? I remember messing with mine a long time ago.


where is the valve located I try to find it but no luck

Also when the engine is cold revs goes up to warm the engine a bit. this no longer happens. I thing this could be something else o could be part of the issue with the A/C

This post has been edited by yagamius: Jul 4, 2013 - 11:10 AM

1994 ST Celica --> no swap --> 7A rebuild1974 Mustang --> Almost Restored