Ah yes, since the low speed fan is the only one giving me the problems I didn't think I needed to bother the high speed relay, but I did interchange the high speed and put it where the low speed was to no avail. I since have put 2 new relays in place just in case. only thing I have not replaced was the high pressure switch, because when I did it 2 or 3 years ago, I had to release the freon. could the fans coming on be related to the temperature switch on the engine block?

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1990 190E 3.0L