Has anyone made a manual switch where you can let the cars fans act normally but turn them on when you want to manually?

Thanks

Steve

 

yeah, I wired mine wide open all the time and run at 140. Just Jump the temp sender and run a toggle switch to the councel. Be sure and keep an eye on it or you will be FUKT

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91 RS W/carbed 350, Vortec heads, performer rpm, Comp cams Xtreme energy 280 grind. BFG Drag radials. 3.42 posi,Corvette servoed 700r4, ****ty stock converter
13.24@104

 

I know exactly what you want. I did it on my 89 IROC. First I found the green ground wires coming off of the low power side of the fan relays (two fans on my car). Use a splice connector to add another wire to those ground wires without cutting them, this allows the stock computer system to retain full control of the fans if you're not paying any attention to the temp gage. Run the new ground wires back into the dashboard area, and connect them to a toggle switch which leads to a good ground.

With my system, leaving the toggles in the off position lets the car behave in the standard fashion, with the ECM controlling all fan turn-on points. By flipping the toggles, I can force the fans on at any time, such as while idling in heavy traffic or while waiting at the staging lanes at the local drag strip. I also wired in a couple small indicator lights to the toggle switches which will turn on whenever I force the fans on. This reminds me to turn them off once the car has cooled off.

If you want more info, check out the tech central area of this site for Willie's ultimate cooling fan control article.

I don't like cutting the ECM control from the fans and wiring them to be fully on at all times. This sounds like a good way to burn out your fan motors, plus it will take your car longer to heat up in the mornings.

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89 IROC with lots o' stuff

-=ICON Motorsports=-

[This message has been edited by D_Amlee (edited October 18, 2000).]