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Old 01-11-2007, 10:28 PM
2000CAYukon 2000CAYukon is offline
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Re: A/C Low Pressure Switch Question

Quote:
Originally Posted by OSUCowboy27
1991 1/2 ton with 5.7L manual reg. cab

My a/c was not working so I figured it needed a charge. I put the gauge on the low side and it read about 45 pounds so I then unplugged the connecter from the LPS and jumpered it. The A/C Compressor kicked on and the pressure read about 24 pounds. Is the problem the Low Pressure Switch or could it be something else? Will I loose my freon charge if I replace the switch? Any help would be greatly appreciated.

I would say that your switch is bad (See http://autoacrepairs.com/cycleswitchinfo.htm)

By the way, you can just remove the old one and put on a new one since there is a schrader valve under the switch.

//2000CAYukon
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