blowing AC fuses

1997 ISUZU NPR
100,000 MILES
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i have a 1997 isuzu diesel npr truck that is blowing AC fuses what do i look for?
Mar 27, 2013 at 10:54 PM
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KASEKENNY
  • ASE Certified Mechanic
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  • ASE Certified Mechanic
The way to find out what is blowing a fuse is we need to start unhooking items on the circuit until the fuse stops blowing. Or unhook everything and plug them back in until you find the one that is causing it to blow.

However, since this A/C fuse is blowing, I would just unplug the compressor clutch and then turn the A/C on. I suspect the fuse will not blow any longer which means your clutch coil is most likely shorted.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Here is a guide that will help with replacing the compressor if needed:

https://www.2carpros.com/articles/replace-air-conditioner-compressor

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

Please run through this info and let us know if you have other questions.

Thanks
Sep 11, 2021 at 9:00 AM
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