C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

85 Cooling Fan Question

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Old Sep 27, 2009 | 05:32 PM
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Default 85 Cooling Fan Question

I have an 85 Corvette and the radiator cooling fan run constantly. I thought they were supposed to come on at operating temp and shut off when not needed?? There is only one fan on this car. Any help would be appreciated.

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Old Sep 27, 2009 | 05:44 PM
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Does it come on when you first start the car with the air cond. off?
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Old Sep 27, 2009 | 09:36 PM
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The fan shouldn't come on until about 228 degrees if it's stock.
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Old Sep 27, 2009 | 10:01 PM
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It will come on when the AC is turned on at any temp.
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Old Sep 27, 2009 | 11:32 PM
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Originally Posted by BADDUCK
It will come on when the AC is turned on at any temp.

It will also come on if there is a ECM or memcal fault
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Old Sep 28, 2009 | 10:47 AM
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On ONLY the 1985, and ONLY when there is no auxiliary fan, there is still a fan switch in the right head, that backs up the ECM. The switch grounds the primary side of the fan relay to run the fan. If that wire is shorted to ground, the fan will run constantly.

RACE ON!!!
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