DIY dual fan mod

[Hyper]

hm...anyone ever measured the amp load on the fans? I was thinking it was bad to suddenly want an extra 10+ amps. I did this mod a different way.
I hooked up the T-splice and eventually manually ground it to a switch. AKA AC fan on demand (gotta find a 190-200F circuit breaker/thermal switch).
And second hooked up the non func. AC or jumping the pressure switch so I can actuate the AC fan when I press my AC switch. So I have 2 ways right now.

why?
Because I'm hoping keeping the engine in a constant temp will give better mileage/performance (I've seen it richen when hot).
Second, constant temp at stop lights, periods of slow movement/hill climbing.

this mod is very effective on cars with front mount intercooler setups. As to my ride I simply connected the fans together with the vampire connectors and forgot about it. It works!!

[tommyo]

I did this mod. First with a switch and then with just a jumper. I used the exact same materials. Same year car. 02. Mine will run the driver's side fan whenever the AC is on but when the driver's side fan comes on the AC fan doesn't run! Any thoughts on why?

Thanks!!

[— Agent☣Orange —]

This mod forces the AC fan to run in conjunction with the radiator fan coming on and that is determined by the engine temp sensor.

As far as I know, the AC fan doesn't run every moment it is on, rather as needed for the AC depending on temp. In other words, this mod makes the AC fan help out the radiator fan but not the other way around.

[Tomahawk]

Doesn't the radiator fan turn on whenever the ac fan turns on anyway? I thought that's why we used the A/C button to determine if we have working fans.