relay for fan to turn on and off

Printed From: the12volt.com
Forum Name: Relays
Forum Discription: Relay Diagrams, SPDT Relays, SPST Relays, DPDT Relays, Latching Relays, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=25350
Printed Date: May 06, 2024 at 8:43 AM

Topic: relay for fan to turn on and off

Posted By: SPS70129
Subject: relay for fan to turn on and off
Date Posted: January 27, 2004 at 9:33 AM

i have a '98 potiac trans am and the cooling fan doesn't come on, i found out that it's a sensor, but it cost $325, so in the mean time i was wondering if any one knew of a way to wire a relay for the fan to turn on when i start the car and turn off when i turn the car off

thanks

Replies:

Posted By: geepherder
Date Posted: January 27, 2004 at 10:24 AM

You could wire up a relay to the oil pressure switch or something, but constantly running the fans will shorten motor life. Why not install a switch on the dash to control a relay?

-------------
My ex once told me I have a perfect face for radio.

Posted By: HamiltonAudio
Date Posted: January 30, 2004 at 2:09 PM

also running the fan continuously will result in overcooling, not letting the engine easily reach operating temperature...this is esp critical to the LT1 and LS1 v8 versions of your car (it is an v8, right? posted_image ) I agree with wiring even a temporary rocker switch on the dash...let the car warm up, flick the fan on and turn it off with the key...

Posted By: HamiltonAudio
Date Posted: January 30, 2004 at 2:14 PM

SPS70129 wrote:

i have a '98 potiac trans am and the cooling fan doesn't come on, i found out that it's a sensor, but it cost $325, so in the mean time i was wondering if any one knew of a way to wire a relay for the fan to turn on when i start the car and turn off when i turn the car off
thanks

also, if you're willing to spend that kind of money on a factory replacement piece...why not consider a complete fan system upgrade? there are dual electric fan sets that replace the factory stuff, and come with the necessary relay and adjustable temp sensor for less money man....