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Cooling fan not coming on except with AC 900 1994

Hello Brickboarders,

My venerable 1994 940T has been boiling over lately. The temp gauge reads slightly over normal(1:00 on the gauge) and the cooling fan should be on. The fan and relays are good-it works fine with the air conditioner on and also responds to the OBD tests, both speeds.Car doesn't boil over with the fan on with AC, BTW. I've measured both sides of the ECT sensor (the rear sensor) at about 300 ohms with the engine partly warm.
Any ideas?

94 940T has 251K miles, 1996 960 has 181K, 2007 BMW 328 has 75K :)






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New Cooling fan not coming on except with AC [900][1994]
posted by  sredwine  on Sun Oct 9 08:49 CST 2011 >


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