Putting 1 Fan on a Switch?
Putting 1 Fan on a Switch? Thinking about unplugging one of my fans and running a switch to it so I can turn it on/off in the staging lanes to maintain the temp I want. The other one would still be controlled by the car. Thoughts? Anyone try this?
I tried to cool it down with water and ice thinking it would react like the old school engines, but it slowed down. Talked to a few other old guys that have been racing since the 60's and they tried the same thing with water and ice and it slowed their LS's down too. These engines like a little heat.
I tried to cool it down with water and ice thinking it would react like the old school engines, but it slowed down. Talked to a few other old guys that have been racing since the 60's and they tried the same thing with water and ice and it slowed their LS's down too. These engines like a little heat.
You can put them both on switches without effecting the stock operation. You'd just need to put a relay on the power to them from your 12v(it's already fused in the stock system) and a switch to turn that off. Then come in with another relay(w/ 35 amp fuse) from a second 12v source and switch that. Just make sure you're able to switch off the stock operation before switching on manually.
Prob more info than you needed... and I know there are after-market kits out there that are plug-n-play for this application.
Prob more info than you needed... and I know there are after-market kits out there that are plug-n-play for this application.
The fans themself run in a series/parallel, low speed is both fans running in series (both @ 6v) and the other is is running in parallel (12v). Both fans are always on, just on low they are running at 1/2 speed.
Anyway, its simple enough to ground one of the wires to the fan relays to turn on either the high or low fans on, thats all the PCM does, If you search around someone had a real nice write up how to do it here. You just have to run one wire under the hood to to a switch that grounds the low speed wire off the PCM, you will get a check engine light if you leave the switch on with the car started though, can easily be shut off with a tuner.
Anyway, its simple enough to ground one of the wires to the fan relays to turn on either the high or low fans on, thats all the PCM does, If you search around someone had a real nice write up how to do it here. You just have to run one wire under the hood to to a switch that grounds the low speed wire off the PCM, you will get a check engine light if you leave the switch on with the car started though, can easily be shut off with a tuner.
I tapped into my PCM (blue and green wire) and run them up to my switch panel.
I can turn them on manually or when it needs to the computer will automaticall turn them on.
Green = Fans are on low speed
Red and Green = Fans are on high speed
I can turn them on manually or when it needs to the computer will automaticall turn them on.
Green = Fans are on low speed
Red and Green = Fans are on high speed
