A/c compressor clutch fuse keeps blowing
have a 2004 Z71, 5.3 V8, auto. All of a sudden the A/C clutch fuse began blowing. Disconnected connector on compressor, NO fuse blowing. Replaced A/C compressor, vacuumed & re gassed, A/C works fine for about 30 min, then blew another fuse. Removed plastic bottom shield (shroud) to get to wiring harness which was grommet-ed (attached) to around exterior of oil pan/block junction. Removed protective plastic wire shield. At the juncture of the wiring harness split on the passenger's side, the wires were very warm to the touch, no smoke, no burned wires, no shorts that I can find. It appears to be a bad connection in the circuit or a bad sensor somewhere. Anybody have any ideas of what/where to check next? PCM under hood had a 10 amp fuse, replaced it with a 20 amp, A/C ran a while (20 min, normal driving) then blew again!!
Does the engine temperature sensor (drivers side towards front) have anything to do with this clutch control circuit? :confused: |
Found it!!! Wires were rubbed raw & shorting.
Location: Where the harness is routed around the front of the oil pan, compressor side, between the engine block & transmission oil cooler lines! |
Thanks for letting us know what you found.
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Originally Posted by rebranger
(Post 85940)
Found it!!! Wires were rubbed raw & shorting.
Location: Where the harness is routed around the front of the oil pan, compressor side, between the engine block & transmission oil cooler lines! |
Thanks!
Your completed story is very helpful. It's always a drag to find soomeone with a similar issue, only to never hear of the resolution! I am in the middle of this problem right now!
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