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Old 06-09-2001, 05:11 PM
Mike Murrell's Avatar
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Join Date: Feb 2000
Posts: 2,574
91 300-SEL

A/C compressor short cycles. Unit does cool well and refrigerant charge is good.

In a recent post here about the pros/cons of various refrigerants, Steve Brotherton mentioned something about an intermittant cycling problem caused by a Klima Relay.

Could a faulty Klima Relay cause short cycling? In my case, the unit runs for 12-15 secs; then cycles off for this same duration. This occurs at highway speeds. At idles speed, it may run a bit longer before cycling off and on. Thanks for your time.
Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
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Old 06-09-2001, 10:11 PM
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Join Date: Mar 1999
Location: Suwanee, GA, USA
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It could be the Klima relay. But, it could be a high pressure situation.
Donnie Drummonds
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