I think I have diagnosed my A/C problems down to my RPM sensor in the compressor, but I would like to make sure before I spend $100. My main symptom is, the compressor comes on and off intermittently. I checked the resistance of the sensor and it was supposed to be 500-600 ohms but i got something up in the thousands. I am pretty sure it is bad but I just want to make sure before I spend the money. Thanks for anyones help!

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George Carstens