Using sensor in heater hose

[redneck999]

Has anyone had exp with doing this? What about advice on making a tee, I saw on summit that they have a tee for sale or should i fab something up, galvanized tee and barbed fittings? Upper or lower hose, what size are hoses?

[Brasscatz]

Are you talking about a temp sensor? I have installed a t-fitting in my heater hose, but I did it so that I could back flush my system. I'm not sure I see the benefit to adding a sensor in there, the stock sensor setup should be sufficient. I may be missing the reason though lol

[redneck999]

Hooking up sensor for electric fan, Either that or i just wire it up to run all time with ignition

[Brasscatz]

Hooking up sensor for electric fan, Either that or i just wire it up to run all time with ignition

Gotcha, that makes sense. What about wiring a switch for it? That way you can turn it on and off when you want?

[saar]

I installed one as well.
Scroll down in: http://www.jeepsallover.com/content.php?127-Jeep-Cherokee-2001-electric-fan-conversion
there is a diagram of the wiring (for the specific dixell controller which I bought)
You can use a simple heat unit that will turn it on/off according to the temp, buy the controller gives better control on the temprature.
Saar

BTW, few months later, I switched back to the fan clutch instead of the e-fan.

[redneck999]

I'm getting serious about using dirtbounds triple fan shroud and 3 perma cool fans from summit and a ron francis thermal switches. i figure that having two fans running and having twice as much coverage is a good thing

[redneck999]

saar, why did you switch back? It seems that using 2/3 thirds of the rad at one time would be better than maybe almost half.

[4.3LXJ]

Just my 2 cents worth here guys. If you go electric, you need to make sure you are moving at least 3000 cfm of air. That is what your stock system does with the efan on. So make sure your fans are up to it or they won't cool the 4.0 the way you want it too

[redneck999]

the ones i'm looking at are perma cools 1450 cfm each

[4.3LXJ]

That would be an increase then

[oderdene]

I've installed temp sensor on middle of lower rad hose and add relay to switch on efan. It turn on around 95C and lazy on turn off. Hot summer day it stays on 10, 15 minutes after engine off. With the shroud it cools well, actually efan borrowed from japan car. There was 2 fans, i used ac fan, we have very limited space there

[redneck999]

Yes.

[saar]

saar, why did you switch back? It seems that using 2/3 thirds of the rad at one time would be better than maybe almost half.

I switched back since the fun clutch cools the engine better.
The e-fan worked pretty hard while it was hot out there.
The alternator worked harder.
The good side - the engine was quite and felt more "alive".
I didn't notice any fuel mileage improvement.

The fun clutch system is much more simple, less "wiring" and points of failure, so I put it back on.

[redneck999]

I put 136 alternator in a couple of years ago, and a HD clutch fan and it's loud. I figure kicking on three of them should suck the bugs out through the scoup!