JOHNREGAL Posted July 13, 2009 Report Posted July 13, 2009 I would like to test the 3 wire temperature sender under the thermostat housing. If I unplug the cable both fans fans run, and the temperature gauge drops to cold. I see aprox 600 ohms yellow to black wires and infinitty black to green..THE GAUGE appears to be working normally. THANKS Quote
slick Posted July 13, 2009 Report Posted July 13, 2009 This is the info I have for my 1996 Firebird. Should be typical to most GM cars. *F Ohms 212 177 194 241 176 332 158 467 140 667 122 973 113 1188 104 1459 95 1802 86 2238 77 2796 68 3520 59 4450 50 5670 41 7280 32 9420 23 12300 14 16180 5 21450 -4 28680 -22 52700 -40 100700 BTW, has your gas mileage been crappy or normal? Quote
JOHNREGAL Posted July 14, 2009 Author Report Posted July 14, 2009 Gas mileage has been fine...I will try putting a resistor aprox 150 ohms to see if the fans come on.The yellow and blk leads appear to be the one's that go to the ecm to control the fans..Thank you for the infoo. Quote
slick Posted July 14, 2009 Report Posted July 14, 2009 If gas mileage has been fine, then the coolant temperature sensor is probably fine as well. Quote
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