Gizmo52

hey everyone

i was looking around at the delete threads for the mechanical fans and found that 90-95 Ford Taurus fans were supposed to be good substitutes...

i went to the junkyard yesterday and picked up a 94 Ford Taurus SHO dual side-by-side electric fan setup.

i was wondering if this would work the same if not better? also ho would i wire it to turn on when the trucks on?

also, one fan is a little smaller than the other so should i make that on the auxiliary fan or just make both turn on when the trucks on???

any help is greatly appreciated...

XJ JoeyD

I would just wire it directly to the battery with an inline fuse for safety and a switch. You can hard wire it in from the fuse block for power and it should come one with ignition on(don't quote me on that tho) I have personally done it on the stock efan with a switch and an inline fuse (5amp I believe). No problems. Not sure about the changes to cooling performance with the dual efan/mech fan delete but I'm sure others will chime in

Gizmo52

ok because i know that theres the ignition relay and that i need a fuse...

i just dont know how to wire it in so that it will work with that relay

and i dont know if i should wire it so that the bigger fan is on all the time and the smaller one is auxiliary or if i should just have them both on all the time...

Littlethunder92

I didnt want my elec fan running all the time... it would draw alot of amps and also take forever to warm up in this 20 degree weather we have now. i went to advanceauto parts and bought a thermostat kit for elec fan. it coems with a relay all wiring and a probe you stick in your rad fins. When my jeep reaches 185degrees my elec fan comes on....210 then my aux fan comes on. It works awesome been running it since the summer one of the best mods i did

TheJerm

I ditched the mech fan for a taurus fan but mine is only one large 2 speed fan, not duel. I currently have the taurus fan and stock aux fan wired up to two switches on my dash. I also run a thermo fan controller to control the fans when I have it plugged it, still need to install the switch, but I control that by unplugging it from the ignition slot of the interior fuse block.

The wiring of it is simple. I went from the ignition slot of the interior fuse block -> switch -> relay -> ground. The the main power is from power distribution center in engine bay -> 30amp fuse (40amp for high) -> 30amp relay (40amp relay for high) -> fan -> ground. Then the thermo controller simply sends a signal to the relays just like the the switch does.

See, easy!

Gizmo52

how did you wire it? has your jeep ever over heated while driving or sitting in traffic?

TheJerm

I probably use the same thermo controller that littlethunder has cause I got mine from advance. It comes with a wiring layout which makes it easy as installing fog lights. I didnt power the fan directly from the thermo controller cause the wires are rather small compared to my 10AWG for low and 8AWG for high i run. Sure it might be overkill but idk even know if my aux fan works lol

xjbeans

http://www.oreillyauto.com/site/c/se...=Hayden&mc=HAD

Gizmo52

is this a set up that turns on automatically?

TheJerm

Yes, but make sure the controller can handle the amperage draw from the fan, otherwise you will keep blowing relays

Gizmo52

ok ill take a look at it... my mechanic buddy said i can just wire it to the accesory wire on my ignition and it will work just as good... i just dont know which was to go... but i got another buddy who's amazing with car electronics and he said hell help me but he cant do it till after the holiday

ManiacXJ

Here is a wiring diagram I made for my car with a Taurus fan.



Since you have two fans and the Cherokee has the aux fan, you can drop the second fan controller and use the aux fan input instead.

Also, with the 2 speed fan that most people use, you only want to ever provide power to one speed at a time so that is why there is the 3rd relay to make sure that LOW and HIGH never get power at the same time.

With 2 fans, you would only need 2 relays, one temperature controlled and one manual/aux controlled.

Not sure on yours, but the 2 Speed Taurus fan is known to have very high amperage draws so it is important to use fuses and relays to control it.

TheJerm

I simple use a 3 way switch with only 1 + lead coming from ignition, What is the purpose of the top 40a relay cause your diagram has it as holding the system open? I dont see why you need 3 relays and 2 fan controllers to control 2 fans. I only needed 1 controller,2 relays and 1 feed back loop for 2 speed fan and stock aux fan. Much simpler.

edit, my control does have capacity for 2 fans and both (taurus high and aux) kick on above 210.

DaveB

Jerm could. U please post a diagram of ur wiring setup? I have two fans to control and urs sounds the most simple. Thanks ahead of time.

ManiacXJ

Yes, the first relay doesn't really need to be there. I was just keeping power cut off as early as possible in the chain but without a trigger voltage from the manual switch or the fan controller it isn't going to pass the second relay anyway.

The 2 fan controllers for mine was because I wanted two different trigger temperatures for the two speeds and didn't trust the signal coming off of my aux fan at the time as it hadn't been working.

This was on my car, not a cherokee and I was also tearing out the entire A/C system at the time so there wasn't going to be a signal for triggering it with the A/C either. As I said in the post, his setup is different and wouldn't be an exact match to my diagram, just thought it might help get the ideas flowing.

My active setup in the car is actually a single speed as the LOW speed of the Taurus fan is plenty of airflow to keep my car cooled at all times, even stuck in traffic in 110F Texas summers.