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

92 cooling fan help.

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Old Sep 16, 2007 | 09:43 AM
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Default 92 cooling fan help.

My 92 was running hot on a trip, 235degrees, which it never goes to that . I popped the hood and saw a plastic bag wrapped around the cooling fan motor. I assumed that this burned up the motor, it is the passenger side fan motor. So, I replaced the motor but it still does not work.
I swapped the relays and turned on the ac, and the drivers side came on. So I assume it is getting power and that the relay is good since the drivers side worked when I swapped relays.
I need to check power at the plug for the fan, I will do that tonight.
Any other suggestions?
Thanks in advance,
Shawn
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Old Sep 16, 2007 | 09:45 AM
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There is a large 40 amp fuse under the hood. Its under a cover with several other fuses in it. Check it did not blow.
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Old Sep 17, 2007 | 02:00 PM
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Thanks 93,
I will look for the fuses tonight.
Shawn
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Old Sep 17, 2007 | 04:37 PM
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Shawn, just to make it more clear, I just went out and looked at mine. The fuse box is on the inner fender well, directly below the ECM and beside the master cyl. There is a 30 and a 40 amp in there for the fans. Also there is another fuse box located behind the battery. Not sure what is in it. Good luck!!
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Old Sep 17, 2007 | 05:30 PM
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Just remember, the fans are turned off by the ECM around 35 mph. So on your trip, assuming you were going faster than 35 mph, your fans should have been off, therefore, something else was causing the higher temps. How much of the radiator was covered by the plastic bag? Was there anything else covering the air intake to the condensor/radiator?
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Old Sep 17, 2007 | 07:09 PM
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Originally Posted by 93 ragtop
Shawn, just to make it more clear, I just went out and looked at mine. The fuse box is on the inner fender well, directly below the ECM and beside the master cyl. There is a 30 and a 40 amp in there for the fans. Also there is another fuse box located behind the battery. Not sure what is in it. Good luck!!
I don't have the shop manuals in front of me, but I think the '92 has fusible links instead of fuses.
If it does, the fusible links are connected to the "jump start" connector behind the battery.

Tom Piper
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Old Sep 18, 2007 | 11:47 AM
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The plastic bag didn't cover any of the radiator, it was wrapped around the fan blade base. That tells me that the fan was running when the bag was sucked into the engine compartment, but now with the bag removed and a new fan motor it still doesn't work. I am stumped, something happened when the bag was stuck in there.
Shawn
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Old Sep 18, 2007 | 04:09 PM
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Also, remember that the aux. fan does not come on till after 237 degrees. Jump connectors A & B on the aldc plug under your dash and see if the fans come on.
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