custom hi/lo radiator fan override 92-93 - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 09-28-2004, 12:52 AM   #11
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Maybe it was Chilton'* that I read it in.

Can't grab my FSM'* cuz DrJay has them in Ft. Lewis!
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Old 09-28-2004, 12:57 AM   #12
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Got ya covered, on the page listed above first paragraph under "Operation" :

Electric cooling fans operate when engine coolant temperature exceeds a certain value. The PCM completes the ground paths for the maxifuse/relay center on the bulkhead. The relay contacts then close and complete the circuit between the 40 maxifuse and the fan motor.
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Old 09-28-2004, 01:00 AM   #13
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You done copying those manuals yet?

Quote:
DrJay: i go tthe book open to the page, figuring out what you wanna know tho
me: Might be a false alarm, but I could swear I read about that. Might have been the older Gen covered in my chiltons.
DrJay: posted
DrJay: is that the info you needed?
I'll dig through my Chilton'*. Not sure, but there was something funky on one of the generations like this.

Anyway, just do the override like that topic I linked. Works like a charm. I run hi-speed all the time in the summer. Rarely turn it off.
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Old 09-28-2004, 01:02 AM   #14
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So its just a ground path .... A resistor wouldnt help I dont think. It may even make it come on later ....
Well POOP ! So much for trying to out engineer GM.

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Old 09-28-2004, 01:08 AM   #15
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As an afterthought. I may wire in one of the adjustable tstats for Hotrods from Summit.
Then again the PCM may revolt. I don't want to flip a switch, I may spill my coffee. Geeze they make it hard to mod these things.

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