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  #1  
Old 06-29-2001, 12:21 AM
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Location: N.E. Ohio
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The a/c on my 1987 300E is acting strange. It works fine on start up but sometimes when I shut the car off and re-start it, the compressor does not engage. This does not happen all the time but it does happen on occasion. Usually when I re-start the car the compressor will engage and work as it should. If it doesn't engage on first re-start it will on the second re-start. Has anyone had this problem? The compressor is about 18 months old and the refrigerant level is correct. I am looking for suggestions where to start. Could this be the climate control unit? The ignition switch? The speed sensor on the compressor? The relays? Thanks in advance for your suggestions.

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1999 SL 500 Sport (30K miles)
1998 E320 (SOLD)
1989 560SL (SOLD)
1987 300E (TOTALED)
1986 300E (SOLD)
1984 300SD (SOLD)
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Old 06-29-2001, 01:33 AM
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Lots of possibilities here; you might consider the following thread. I also wonder if there could be an intermittent short in the climate control?

91 500SL A/C Compressor will not Engage
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