04 Jetta, 224k miles. I'm the second owner, purchased at 36k or so. I do not believe I've ever needed to recharge the system, but I have replaced the clutch coil by itself once and the whole pulley/coil assembly when the bearing failed and toasted the coil. Both fans were new last year and work perfectly.
AC has always been ice cold until yesterday (95F ambient, engine just over 190). I jumped on the throttle a bit and the AC cut out but didn't come back on. I could smell a burning rubber smell so I shut the ACoff and dropped the car off at home and took another. Later, the AC worked great.
I drove it 45 minutes this morning with great AC (over 90F again). On the way home, it cut out and I could smell what I would describe as overheating brakes. I checked and the AC clutch pulley was slowly jerking with small sparks. I drove home with it off but picked up my AC tools on the way home.
Of course when I got home to test, the AC worked perfect. Both fans are new, charge (low side) read 140 off, 40ish running. Beautiful cold air.
When I replaced the pulley, I fitted the faceplate using the original shims (this was just enough to let it freewheel without dragging). Could I need to remove one or is the compressor locking up? No belt squeal, no abnormal engine load, etc.
AC has always been ice cold until yesterday (95F ambient, engine just over 190). I jumped on the throttle a bit and the AC cut out but didn't come back on. I could smell a burning rubber smell so I shut the ACoff and dropped the car off at home and took another. Later, the AC worked great.
I drove it 45 minutes this morning with great AC (over 90F again). On the way home, it cut out and I could smell what I would describe as overheating brakes. I checked and the AC clutch pulley was slowly jerking with small sparks. I drove home with it off but picked up my AC tools on the way home.
Of course when I got home to test, the AC worked perfect. Both fans are new, charge (low side) read 140 off, 40ish running. Beautiful cold air.
When I replaced the pulley, I fitted the faceplate using the original shims (this was just enough to let it freewheel without dragging). Could I need to remove one or is the compressor locking up? No belt squeal, no abnormal engine load, etc.
Intermittent AC - clutch pulley jerking/sparking
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