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Been having some problems with the a/c on my 95 geo tracker. for one the geo idles really rough with the a/c is off and idles fine with it on. second its only blowing air not cold or hot. compressor clutch is engaging, fans are spinning. high side is cold low side is not hot.
 

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The idle speed controller is a solenoid that raises the idle when you have a load on the engine. Your's is obviously working properly. But if your idle is bad otherwise, you need to advise exactly what the idle does from cold start. You may also want to do a compression test to confirm engine timing, as well as confirm your ignition timing and that your spark plugs are gapped to .028". Idle is usually a symptom of something else. Is your check engine light on with the key on and off once the car starts?? Have you checked the refrigerant in the A/C?
 

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high side is cold low side is not hot.
I think you have it backwards, but we need gauge pressure readings to be of any help. ;)
 
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