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1994 S600 AC Compressor Won't Engage

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Old 05-19-2011, 08:49 PM
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1994 S600
1994 S600 AC Compressor Won't Engage

I have a 1994 Mercedes S600. I recently replaced the compressor, dryer, and AC relay after the AC stopped blowing cold air and I noticed freon leaking from the compressor. The new compressor and AC fans will only engage when the car is idling. At idle, it blows cold air. As soon as I begin driving it, it stops blowing cold air. If I restart the car, it will bow cold air at idle and stop when
I begin driving. Any ideas? Thanks!
Old 05-20-2011, 01:00 PM
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s320
being a 94 I would suspect engine wiring.If not"you know these cars at full pedal will kick off the compressor"So maybe kickdown switches.Thats my best quess.Don't forget the clutch.

Last edited by oldsinner111; 05-20-2011 at 03:07 PM.
Old 07-07-2011, 03:31 PM
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93 300SE Rauch "Smoke"
Does the compressor kick off or is it blowing hot with comp running above idle?

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Old 07-19-2011, 07:33 AM
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not a merc
is you poly v belt routed correctly and tensioned

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