View Full Version : Compressor Runs Continuously

09-04-2006, 08:48 AM
RE: 1983 E28 533i

My A/C compressor suddenly started running continuously, even without A/C switch on. Blows cold air through cracks in console without A/C button on. Temperature control seems to have no effect (either with A/C on or off).

Any thoughts as to cause?


09-08-2006, 04:28 PM
Im no expert on ACs, or cars for that matter. But isn't there a clutch in the AC that is being controlled by the switch? So then I guess it's could be the switch or the clutch. Try listening to the compressor when hitting the switch. You might hear it trying to work the clutch..

Just my 2 cents..

09-12-2006, 08:03 AM
Mine did this (96 m3) but it was because of the infamous control panel and required me to solder in a new capacitor.

Don't think you would have the same issue though on an 83 as I believe the technology was different.


09-23-2006, 05:30 PM
Turns out that Scany was right - it was the clutch on the compressor. We solved it by cutting the belt until I can find the time and $$ to replace the compresssor.


09-25-2006, 06:19 PM
Good to hear you found the cause.