08 suburban ltz ac fuse keeps blowing
#1
08 suburban ltz ac fuse keeps blowing
Good evening!
I have an 08 suburban ltz with rear air (rear system has been bypassed for years)
So last year I replaced my ac compressor it started blowing the fuse as soon as you pushed the snowflake button with a used known good oem unit. It worked for a couple months the boom same issue. Went to the auto parts store and have put two new units in since with the same issue. (Works for a bit then out of nowhere starts blowing fuses)
If I disconnect the compressor it doesn't blow the fuse if I add a substituted load (light) the light lights up and the fuse doesn't blow. Could I really have that many bad compressors?
Does anyone have a wire diagram?
Tia for any help!
Robert
I have an 08 suburban ltz with rear air (rear system has been bypassed for years)
So last year I replaced my ac compressor it started blowing the fuse as soon as you pushed the snowflake button with a used known good oem unit. It worked for a couple months the boom same issue. Went to the auto parts store and have put two new units in since with the same issue. (Works for a bit then out of nowhere starts blowing fuses)
If I disconnect the compressor it doesn't blow the fuse if I add a substituted load (light) the light lights up and the fuse doesn't blow. Could I really have that many bad compressors?
Does anyone have a wire diagram?
Tia for any help!
Robert
#2
Administrator
Welcome to the forum. I suspect the new compressors come with a new clutch assembly already on them. If so then we can rule out a clutch coil that's failing on your old compressor. A light is not going to provide the same load as a clutch coil. You need to measure the resistance of a clutch coil and then use a substitute resistor of that value for a load.
#3
73shark thanks for the reply.
The only tools i have available atm are a power probe 3 and some basic hand tools and my ac gauges and vacuum pump.
I will have to find a cheap multi meter I just moved and all of my tools are in storage while i wait for my new house to finish being built.
I am in Tuscan AZ so going without air is not an option for me.
The only tools i have available atm are a power probe 3 and some basic hand tools and my ac gauges and vacuum pump.
I will have to find a cheap multi meter I just moved and all of my tools are in storage while i wait for my new house to finish being built.
I am in Tuscan AZ so going without air is not an option for me.
#5
Ok so an update:
so since i am at work i have had time to think about this problem. I decided to go outside on my lunch remove the fender cover and unplug the compressor and of course the fuse doesn't blow. i plugged it back in boom instantly blows.....I wiggle the harness put a new fuse she has working air. So I guess she had a short to ground.....now to find it.
I ordered reset able fuses and a multimeter from Amazon will be here tomorrow. wish me luck finding this short.
so since i am at work i have had time to think about this problem. I decided to go outside on my lunch remove the fender cover and unplug the compressor and of course the fuse doesn't blow. i plugged it back in boom instantly blows.....I wiggle the harness put a new fuse she has working air. So I guess she had a short to ground.....now to find it.
I ordered reset able fuses and a multimeter from Amazon will be here tomorrow. wish me luck finding this short.
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sewerpickle
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August 25th, 2019 6:27 PM