[HighLonesome]

Speaking from years of experience playing with electric fans in the hot desert, I think the fan should come on LOW pretty quick, around 180-190, and stay on continuously unless you are out on the freeway. Otherwise there is no air moving in the engine bay and everything gets real hot. If you think about it, a clutch fan turns all the time. It takes a lot adjusting to get the thermoswitch set just right so the fan turns off at freeway speeds and stays on around town and out wheeling.

[DTrem08]

So your saying I should just have it on low all the time and maybe turn it off manually when the cars just warming up?

[HighLonesome]

Originally Posted by DTrem08

So your saying I should just have it on low all the time and maybe turn it off manually when the cars just warming up?

I'm saying have it come on Low early and stay on most of the time because ZJ engine bays are ovens. Having the I6 isn't as bad as the V8.

[Jeepfreak81]

Originally Posted by DTrem08

So your saying I should just have it on low all the time and maybe turn it off manually when the cars just warming up?

Definitely not!

You WILL forget to turn it on at some point!!!

Use a thermostatic switch for low, and set it at around 160* (mine is set to come on at 90* but mine heats up VERY fast) High and off are the only "manual" switch settings.

[DTrem08]

OK, but where do I get this switch and how do I wire it up??

Heres the picture for the other question, its a MS paint reproduction of what the top of the relay says, my camera wouldn't take a clear enough picture

[Jeepfreak81]

If it helps, here is a write up I did on my Taurus fan install. Shows the switch I used with the NAPA part number.

http://www.jeepforum.com/forum/f12/taurus-fan-install-312027/

[DTrem08]

I might have missed it, but the only two part numbers I found were for the switch in the cab and the 75 amp relay

[Jeepfreak81]

Originally Posted by DTrem08

I might have missed it, but the only two part numbers I found were for the switch in the cab and the 75 amp relay

Which switch are you looking for? The thermostatic one?

Advance Auto Parts
Hayden Fan Control Kit
Part Number: 3647

Or

Hayden Fan Control
Part Number: 3651

You can use others.... but those are available off the shelf.

[DTrem08]

Ok, Ill see if I can pick one of those up

anybody know anything about wiring up that relay with the diagram above?

[BradMB2004]

Originally Posted by DTrem08

Ok, Ill see if I can pick one of those up

anybody know anything about wiring up that relay with the diagram above?

yeah, are you gonna use a temp sender to turn it on or a switch?

[HighLonesome]

Couple of my writeups

http://www.jeepforum.com/forum/f13/e-fan-controller-schematic-467329/?highlight=ford

http://www.jeepforum.com/forum/f13/ford-3-8-efan-project-begins-355400/

One thing I will say is if you do the efan wrong, you can overheat and ruin your motor...so the project is nothing to sneeze at.

[DTrem08]

Originally Posted by BradMB2004

yeah, are you gonna use a temp sender to turn it on or a switch?

Im just going to have it so its always on low with a manual override for high

[DTrem08]

All I need now is a little help wiring up that relay and I should be good to go

[Jeepfreak81]

Originally Posted by DTrem08

Im just going to have it so its always on low with a manual override for high

If you use the thermostatic relay, you can use it on low all the time but the relay will power it on at a certain temp, the 3 way switch allows for a manual over ride to high

I wouldn't leave it on low all the time, you really should use the thermostatic switch controlled by the in cab three way switch, it moves enough air that your motor might never warm up properly, and a cold running motor is in efficient and can start burning out sensors (O2) and if you run your cat converter can ruin that too.

[DTrem08]

Ok I'll have to look into pickin up one of those hayden kits then