Shocking Chevy


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Old 03-01-17, 11:36 AM
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Shocking Chevy

When I turn on A/C it blows a fuse. Can put it on defrost and plug a fuse in it will run then blows the fuse. I have traced wires but nothing is damanged. 1982 Chevy Silverado 1/2 ton v8 lwb HELP!!!!
 
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Old 03-01-17, 12:15 PM
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Check your manual or the interwebs to see what else is on the fuse, but I suspect a shorted clutch on the A/C compressor.
 
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Old 03-01-17, 12:58 PM
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I put it over on defrost and put in a new fuse and when I turned on the fan it ran for a few seconds then blowed it again. Thanks turbo
 
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Old 03-01-17, 01:11 PM
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Your fan really does not have an "off" position does it? Most cars and trucks don't. Will it blow the fuse running on low speed? IF so, it could be the fan control reisstor that is faulty. I know I have had to change mine out on my Ram because of a similar problem.
 
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Old 03-01-17, 01:59 PM
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Didnt try it on low I have blown about 10 fuses. Think I just flip the fan switch up right to high. Everything off just to slide it to A/C blows the fuse. This internet stuff is getting more interesting. Thanks chandler
 
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Old 03-01-17, 02:46 PM
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IF sliding it to A/C blows the fuse, I think, as turbojimmy2 does, that it could be associated with the air conditioning unit, evaporator, other switches.
 
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Old 03-01-17, 02:50 PM
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Put a circuit breaker in instead of a fuse while testing. Hmmm, does yours have the round fuses? If so, no breakers for those.

Had an SUV would blow the blower motor fuse for no reason and completely randomly. It tested good and the shop couldn't find any problems in the wiring. Finally told me to put an auto-reset breaker in and it ran for 1 1/2 yrs that way.
 

Last edited by Gunguy45; 03-02-17 at 12:55 AM.
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Old 03-01-17, 04:50 PM
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Not quite sure what's shocking about this problem.

The compressor has a plug on it. Unplug the connector and then try a new fuse.
 
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Old 03-01-17, 07:57 PM
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Thanks ya'll its been alot of help. I got this truck as a project. Good chance you will be hearing from me alot.
 
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Old 03-02-17, 03:15 PM
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Hi fellas..I unplug the A/C and put in new fuse and as soon as I slid to A/C it blowed. I went and got 20amp circuit breaker and fuses. Slid it to heat put the fuse in and turned on ignition and fan started blowing. Turned it off plug the A/C back in and crank the truck A/C and heat work. It blowed the fuse 2 years ago and this is the first time it did it again. I have replaced fuel pump, tank selector valve and a throttle cable since I bought it. Its simply shocking how good of shape this truck is in...but it is old almost as old as me. I was 13 when this truck came out. Thanks you guys
 
 

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