New Fan Switch Mod from LS1info.com

[Dojo2000]

http://www.ls1info.com/article.php?s...thread&order=0

I like this one better than the switches! This one you just set the temp and it turns the fans on automatically.

[OZ]

Now this is more like it! I've been watching the thermo and fan threads alot. I new there had to be a better way. Wish we had a Pep Boys around here, i'd have a new project for tomorrow.

Thanks for the post. [img]graemlins/fluffy.gif[/img]

[Backfire]

I am not real familiar with how the dual fan relays work since I have a 3.4L single fan, but the way he showed it in the pictures would only turn on 1 relay/fan. Do the dual fan systems have two relays, one for each fan? Or is it different relays for different speeds of both fans?

Also, the setup looks to run the power from the relay hot wire through the switch, and back to the output wire of the relay. You could probably tap into the control wires of the relay and use the temp switch to close the relay. Would just be a low current solution requiring smaller wires. But maybe using the relay is what is triggering SES lights for you 3.8L guys. I run mine by controlling the relay and have no issues.

One other concern would be preventing the switch from activating the fans while you drive. You don't want the fans operating constantly as you will wear them out prematurely. Make sure to set the temp high enough that you would never see it during normal driving.

[ August 17, 2002: Message edited by: Backfire ]</p>

[magic1872]

Does making the fan come on at a lower temp really help that much???

[Backfire]

It is useful when your car is stuck in traffic. It helps prevents the coolant temp from rising far above the normal driving level. I don't know about a performance gain since most situations where it is helpful you are sitting bumper to bumper, so it wouldn't really matter. Just helps to keep temps at a normal level and prevent overheating.

[ravenp]

<blockquote>quote:</font><hr>Originally posted by Backfire:
It is useful when your car is stuck in traffic. It helps prevents the coolant temp from rising far above the normal driving level. I don't know about a performance gain since most situations where it is helpful you are sitting bumper to bumper, so it wouldn't really matter. Just helps to keep temps at a normal level and prevent overheating.<hr></blockquote>

...dont' forget the staging lanes at the track [img]smile.gif[/img] It'll help your performance there.

[Dojo2000]

The dual fan setups are controlled by 2 relays, one for low and other for high. From the looks of it this switch setup it only engages the fans on low, but it does not affect normal operation of the fans. It the engine does get too hot, the fans will kick on high like normal.