A/C blows fuse #37 every time - Chevy Malibu Forum: Chevrolet Malibu Forums
 
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post #1 of 8 (permalink) Old 05-15-2019, 03:15 AM Thread Starter
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A/C blows fuse #37 every time

My ‘02 Malibu has an issue where it blows the #37 fuse when the A/C is turned on, which also kills the gas gauge and temp gauge. The compressor engages for about 5 seconds and then the fuse blows. Can anyone help me with where to start with figuring out what is wrong?
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post #2 of 8 (permalink) Old 05-15-2019, 03:47 AM
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Re: A/C blows fuse #37 every time

Unplug the AC compressor and then turn the AC on. If it still blows the fuse then the wiring is the issue. If not, then the compressor has an issue, so maybe the clutch itself is failing.


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post #3 of 8 (permalink) Old 05-15-2019, 04:14 AM Thread Starter
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Unplug the AC compressor and then turn the AC on. If it still blows the fuse then the wiring is the issue. If not, then the compressor has an issue, so maybe the clutch itself is failing.
I did pull the relay, and the fuse did not blow when the ac was turned on. Is that the same as unplugging the compressor?
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post #4 of 8 (permalink) Old 05-15-2019, 04:25 AM
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Re: A/C blows fuse #37 every time

Partially, but not completely.

Pulling the relay tests only the control circuit, the part that tells the relay to turn on. It doesn't apply 12V to the wiring between the relay and compressor. By unplugging the compressor, the relay will engage and any wiring between the relay and AC will be powered up. If it draws too much current then the fuse will blow. If not, then the issue is at the compressor.


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post #5 of 8 (permalink) Old 05-15-2019, 04:54 AM Thread Starter
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Partially, but not completely.

Pulling the relay tests only the control circuit, the part that tells the relay to turn on. It doesn't apply 12V to the wiring between the relay and compressor. By unplugging the compressor, the relay will engage and any wiring between the relay and AC will be powered up. If it draws too much current then the fuse will blow. If not, then the issue is at the compressor.
Great, thanks for clarifying. I will try that when I get home tonight.
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post #6 of 8 (permalink) Old 05-15-2019, 05:16 PM Thread Starter
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Quote:
Originally Posted by DrivenDaily View Post
Partially, but not completely.

Pulling the relay tests only the control circuit, the part that tells the relay to turn on. It doesn't apply 12V to the wiring between the relay and compressor. By unplugging the compressor, the relay will engage and any wiring between the relay and AC will be powered up. If it draws too much current then the fuse will blow. If not, then the issue is at the compressor.
Great, thanks for clarifying. I will try that when I get home tonight.
Jeez I am having a hard time unplugging the little harness from the compressor. There doesn’t seem to be a tab on it.
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post #7 of 8 (permalink) Old 05-15-2019, 08:29 PM
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Re: A/C blows fuse #37 every time

I'm not sure if it unplugs directly at the clutch or if it goes a little ways away before there's a plug.


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post #8 of 8 (permalink) Old 05-16-2019, 03:46 PM
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Our 2000 has been having the same issue. When you solve the problem, could you please let us know what it was and how difficult it was to fix?
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