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

Primary cooling fan amp draw?

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Old Apr 20, 2006 | 08:44 PM
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Default Primary cooling fan amp draw?

"86 A4 L98. Anyone know how many amps the primary cooling fan should draw? Burned off the fusible link and I kinda suspect that the fan motor has gone south. Everything else checks out ok.Lookin' thru the HELMS but don't see anything about resistance.
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Old Apr 20, 2006 | 09:11 PM
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I think the fuse is a 3 AMP. But if you look at the trouble shooting in the FSM Electrical book it say to use a 20 AMP fused jumper for test.
Look in your fuse panel, I can't imagine the fan drawing more than the fuse would allow.
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Old Apr 20, 2006 | 09:39 PM
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the 3 amp fuse is the relay.

the fan is closer to 20-25 amps, depending on engine bay temperature and load. I "guesstimate" my single fan as drawing a 25 amp load.
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Old Apr 21, 2006 | 12:37 AM
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I have measured the current drawn by the main fan motor in my 87, it is 14 amps.
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Old Apr 21, 2006 | 03:35 AM
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Thanks all got home late yesterday from business trip and only did some FAST troubleshooting.Will check it out it later today.
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Old Apr 21, 2006 | 11:57 AM
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I tested mine today and it draws 19 amps. The 3 amp fuse only runs the relay.
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Old Apr 21, 2006 | 03:30 PM
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After testing the amp draw on the fan motor I found that it is drawing upwards of 45 amps. Guess it's time for a new fan motor.I can't believe the darn thing only last 20 years!
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