Quote:
Originally Posted by trhaverstock
I have a 2004 E53 3.0 with just over 105K miles. A/C was working great the other week and now abruptly not blowing cold.
I have a manifold gauge set and am getting around 90psi on both high and low sides with the A/C either on or off. The clutch is engaging when I turn the A/C on and will stop when I turn off. I checked the two 7.5a fuses in the glove box and am good.
I am looking for some advice on what to troubleshoot and hoping for advice it's not the compressor gone bad :-(. I am not well versed on A/C other than adding R134.
Thanks!
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There's your problem lady, the low side is to high and the high side is to low. Looks like the compressor is not compressing. Could be the variable displacement valve that is shot, or perhaps you just need to give it a nudge to get the wobble plate to start wobbling at it maximm rate. Rev the engine with the compressor engage to about 5000 rpm. See if that will nudge the wobble plate.