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Old 07-01-2009, 05:41 PM   #1 (permalink)
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2001 X5 A/C Quit

Just bought my, first Beemer. I have a 2001 X5 3.0 and I was driving with Air Blasting and then it Quit. The Clutch on the compressor is not engaging. The fuses are all good. Saw on web that Front Aux Fan should be on when A/C is on. If not on, compressor clutch will not engage. I pulled the plug from the clutch at what appears to be a sensor on the Freon line were it plugs in and then reconnected. The compressor clutch engaged and it started pumping cold air again. This seemed to cycle on/off. When it cycled, I could see the Aux Fan move like it wanted to star spinning but didn't take off. Tried to help it spin, but stll no go. Any Clues? Is it a bad Aux Fan stopping the compressor clutch? I don't have a wiring diagram to put voltage to see if it engages.
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Old 08-18-2009, 03:41 AM   #2 (permalink)
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sounds like you are low on freon. You can recharge to confirm... but really if you lost the freon, then it means you have a leak in your system somewhere.

that "sensor" in the lines you pulled... that is a pressure actuated cut-off switch and yes. connected to the magnetic clutch. It's purpose is to shut off the A/C compressor operation when pressure goes too low. thus, the compressor wo'nt burn out.
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