AC Problems - Ranger-Forums - The Ultimate Ford Ranger Resource


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  #1  
Old 08-20-2007
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AC Problems

Hello everyone. I'm new to the forum and have a problem with my ac. It works fine when I am sitting still. Blows out cold air and everything is good, but when I start driving it starts blowing warm air and the engine revs up and wont idle down unless I turn off the ac. Can someone give me some advice on what may cause this. Thanks in advance for any help on the situation.
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Old 08-20-2007
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What year?
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  #3  
Old 08-20-2007
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sorry, its a 97 with 2.3 L
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Old 08-20-2007
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is the compresser staying engauged?

is the fan clutch freewheeling?

check engine light on?
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  #5  
Old 08-20-2007
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check engine light not on, fan works fine, the compressor stays engaged for a couple minutes then diengages.
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Old 08-20-2007
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On first impression, this SOUNDS like a pressure switch problem. It's like a nominal pressure is maintained while at idle, but a high pressure condition occurs when the compressor is spun at higher rpms.

Check the continuity of the A/C clutch cycling pressure switch and the A/C pressure switch.

Since the A/C compressor is cycling normally, you can rule out the A/C clutch control relay, diode, and field coil. These are the only things that connect to the PCM and control the A/C system.
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Old 08-21-2007
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sounds like the system needs a re-charge
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Old 08-21-2007
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i thought thats what the problem was too and recharged the system, but it didnt fix the problem. like i said though, it works great when im sitting still
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Old 08-22-2007
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Overcharged.
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Old 08-22-2007
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Quote:
Originally Posted by Earl43P
Overcharged.
+1
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  #11  
Old 08-29-2007
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thanks everyone for the help. it was overcharged. thanks again for the help.
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