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Cooling Fan Problems

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Old May 29, 2006 | 03:34 PM
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I Have A 84 Vette A Bought Been Fixing It Up I Cant Get The Fan To Work When The Motor Is Running? I Have But In A New Relay, Fan Switch Sensor,coolant Temp Sensor Still Can Get The Fan To Work When The Motor Is Going. I Can Put A Jumper Wire Between A,e In The Relay Fan Comes On, I Can Put A Wire To The Fan Switch Connector And Ground It The Fan Comes On. Tested The Fusebox And Everything Is Getting Voltage But When I Start The Motor Up And It Heats Up The Fan Nver Comes On.the Only Thing I Can Think Is There Something Wrong In The Ecm ? Got Any Ideas ? Thanks
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Old May 29, 2006 | 03:44 PM
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What temp do you let it get to before deciding the fans not coming on? I changed my ECM and now my fan comes on at 230* rather than 170*.
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Old May 29, 2006 | 03:54 PM
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I Think It Was Pushing About Close To 230 I Was Thinking It Should Come On Way Before That But Maybe I Need To Let It Go To 230 Or So.?
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Old May 29, 2006 | 03:58 PM
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I wouldn't let it get to 240*. That might be pushing it. Mine only gets to 230* when idling. With a 180* thermostat, while driving it stays around 180*.
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Old May 29, 2006 | 10:32 PM
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Wow does this sound like what i just went through.I was thinking it was my ecm also and replaced it but it was not the problem.I have a 90 so i know it's different but worth a shot.Check the ten amp fuse for the gauges that was the problem with mine also my gauges did work with the fuse blown hope it helps Tbone
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