I was wondering if I could get some help with an automotive ac circuit. I've tried the automotive forums but haven't been successful. I separated the ac compressor from the rest of the circuit and it is the culprit for the blown fuse (This test was done without a diode in the circuit). It is a new compressor with a new clutch but I wonder if it is faulty. Initially the fuse doesn't blow until the compressor has had some time to warm up and is pulling less amperage. Then when the clutch is cycled off the fuse goes. There is an ohm test that I have tried to do on the coil for a resistance of 2 to 5 ohms and I got low readings. Does this sound right? My meter is cheap so I'm not sure if the results are trustworthy. Could there be different readings for cold vs hot? Also I would really like to know how the diode protects the circuit from a voltage spike if it is wired parallel and not in series. Any help solving this problem would be appreciated.
Thanks
Jerry
Thanks
Jerry