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Old 08-29-2007, 02:50 PM
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Join Date: Dec 2004
Location: arkansas
Vehicle: 1997 ford f-150
Posts: 9
A/C Compressor Short Cycle

My truck is a 1997 F150 with the 4.2 v6, auto transmission. Now to the problem my ac compressor short cycles and I have no cold air. I added a can of r 134a and it worked for about 3 days before it quit. I hooked up the guage and it shows it still full but the pressure goes up and down as the compressor kicks on and off but it is still in the filled range of the guage. The pressure cycling switch is working I guess, when I touch it I can feel it clicking on and off and the lines right behind it are very cold. I don't know where to start to look for the problem any help will be greatly appreciated as in the past this board has helped me out alot:rocker:
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Old 08-29-2007, 03:21 PM
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Join Date: Nov 2006
Location: Memphis, TN 38135, USA, Earth
Vehicle: 1983 Ford Bronco
Posts: 5,334
The gauge only shows accurately when the compressor is RUNNING. If the pressure drops too low, the low pressure switch will turn it off, indicating low charge. But don't just keep dumping it in - get a pro to find & repair the leak. You can damage a LOT more by just refilling it.

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Last edited by Steve83; 08-29-2007 at 03:30 PM.
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Old 08-29-2007, 03:21 PM


 
 
 
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