I have a 87 Model 560SL and am having problems with the air Cond. The only way I can get it to work is turn on defroster button first and then air button. Will only work on high speed fan. All of a sudden it will shut off. after a few minutes or quite a few minutes it will start by pushing defrost button first. Plenty of cold air when working and temp wheel works. any idea?? Thanks
AC is pretty complex system and troubleshooting usually take much more than few lines on the Internet.
For starters if AC compressor comes only on def mode, you dash controls might be messed up.
Compressor shutting off after few minutes for no obvious reason very often is due too big gap on compressor clutch. Start with checking.
Not a whole lot, other than replace it. Take your current one out and give it a sniff. Often times when they fail they actually smell burnt.
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