Mechanics

RPM GOES REAL LOW WITH AC ON.

1992 Honda Civic

Air Conditioning problem
1992 Honda Civic 4 cyl Front Wheel Drive Manual 154500 miles

sometimes my car stalls when I let go of the gas pedal, but only happens with the ac on. When ac is off I dont have that problem thanks in advance.
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Jaurequi
October 1, 2010.



What engine do you have?


http://www.2carpros.com/forum/automotive_pictures/561653_Engine_options_92_civiv_1.jpg


Wrenchtech
Oct 1, 2010.
Soory I forgot to add my car is Honda Civic VX. Engine is 1.5z litter vtec-e. Thanks.

Tiny
Jaurequi
Oct 1, 2010.
There is an "idle up" valve mounted below the throttle body that is designed to overcome the extra load of the A/C. Check it and see if there is anything obviously wrong with it.


http://www.2carpros.com/forum/automotive_pictures/561653_Idle_up_valve_92_Civic_1.jpg


Wrenchtech
Oct 1, 2010.
Ok I will & I'll let you know. I appreciate it.

Tiny
Jaurequi
Oct 1, 2010.
I found that idle up screw with the diagram you sent me. Do I have to adjust te screw with ac on?

Tiny
Jaurequi
Oct 1, 2010.
No, I didn't say to adjust anything. The is a valve mounted below that to bring the idle up when the A/C comes on and it likely has a problem.

Wrenchtech
Oct 1, 2010.
Ok. Is it called the fast idle valve? If so do I need to take out or how would I know it's damage?

Tiny
Jaurequi
Oct 1, 2010.
Your really going to need some help. Your probably over your head on diagnosing this.

Wrenchtech
Oct 1, 2010.