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Old 12-13-2023, 10:44 PM   #18
fauXGT
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Join Date: May 2021
Location: Spokane, Wa
Posts: 219
Re: Cooling Fan relay setup

When I eliminated the clutched fan on the '91 GT for intercooler piping, I researched alot of junkyard parts. I realized that there is alot of confusing ways to go. Being my ECU does not have signaling outputs for e fans, I went for a single SPAL 16" fan with a variable speed controller. Has an A/C auto on input and a stand alone temp probe that fits into the radiator, being I'm running a 180* thermostsat for the supercharger. It doesn't matter what temp anything else is running, it only kicks the fan on when it needs to. Hot days when shutting it off, the fan will still continue to run for 30+ seconds after just to cool things down, then turn off. It does vary the speed... not just low/high. 15 years ago $110 for the fan and $80 for the controller/temp sensor. Love it. My 2 cents.
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'51 Chevy 3600 5 window
C4 Vette front/rear suspension with drive train
full Rusto-Mod
'92 GMC Sonoma GT VIN #0015
'91 GMC Sonoma GT extended cab 1 of 1
.....and more trucks
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