Ok, I finally fixed my idle problem with a new temp sensor, new fuel injection relay, new radio supression relay, new power stage and other numerous things. I have 173,000 miles on my 1993 940T wagon. But now I have one remaining issues which is caused by the clutch on the A/C compressor. everytime it cycles on and off, it jerks and the idles spikes. I hear a squeal everytime it cylces. I just replaced the belts. Is the refrigerant low? Bearing bad? switch? This car is becoming a high maintenance woman! :)
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