Hey guys,

Recently, my A/C has been acting very oddly. Compressor engages when I hit the button to use it, and functions beautifully, aside from a slight squeal from the belt on some days; I suspect humidity being the cause. If I hit the Economy button, it will blow fresh air, and on occasion, accompanied with a squeal from the accessory belt, the A/C compressor will kick in intermittently. Same symptoms when I turn the system off as well.

What can be causing this kind of symptom? And how do I go about tightening the accessory belt tensioner to stop the squealing?


Thanks,

Carlen

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1987 560SEL (210,000 miles)