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#1
06-07-2005, 10:22 PM
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1987 300E A/C problem (compressor won't run properly)
I thought I had a bad A/C relay (002 545 13 05). I replaced the A/C relay, but the compressor still does not engage. I initially thought it was the relay, because when I removed it and hot wired port #5 to port #7 the compressor clutch engages. So, I guess the problem is whatever tells the A/C relay to activate the compressor. Can anyone help?
When I jump the A/C relay ports 5 to 7 the air conditioning runs fine. But, the compressor runs constantly, and that is certainly not a satisfactory fix. Last edited by boyd searer; 06-08-2005 at 09:46 AM. Reason: Better discription of problem. 
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