electric fan question
Thread Starter
Teching In
Joined: Mar 2008
Posts: 44
Likes: 1
From: Winnipeg ,Canada
electric fan question I'm using 5.3 vortec truck pcm which came with clutch fan drive. I would like to install electric fans instead. Can i wired the truck pcm to run electric fans if yes what pin# do i add wires to.
Thanks, Jean-Marc
Thanks, Jean-Marc
Thread Starter
Teching In
Joined: Mar 2008
Posts: 44
Likes: 1
From: Winnipeg ,Canada
Btw my pcm is a 2002. I looked at later years pcm and they show c1-42 and c2-33 pins are for the fans. My 2002 pcm has no wire at ci-42 pin and c2-33 is used with AC. Anyone has any info on this.
Thread Starter
Teching In
Joined: Mar 2008
Posts: 44
Likes: 1
From: Winnipeg ,Canada
Thread Starter
Teching In
Joined: Mar 2008
Posts: 44
Likes: 1
From: Winnipeg ,Canada
Well it has been a while since i last posted here but anyway. I have the engine all wired in and fire right up ,runs great. I'm still having issues with the electrical fan. I'm running one fan, added a wire at C1-42 to the fan relay, using HPtunner we set the temp to turn on the fan twice, first at 195 degrees and then at 200 degrees but the fan keeps coming on below 180 degrees with the thermostat not even open yet and stays on. What is going on here??
