E-Fan and the 4.0L maintaining temp on its own (and me overheating... oops)
I found something interesting regarding engine temperature and an e-fan yesterday. Apparently, I've had my E-Fan hooked up wrong since I installed it late last year. The only way the fan would run is with the air conditioning. The regular temperature sensor by itself would never turn it on. I don't know what the hell i was thinking when i hooked it up like this, I'm baffled I ever let myself do it.
However, what I also leaned was that the 4.0 will keep itself cool quite nicely on it's own without any help. It was 100 degrees on monday and tuesday. I was driving around without the AC on (windows down) which meant NO FAN all day. The temperature remained in the middle for the entire time. The only time it starts to clim is when it's idling for more than a few minutes. Stop and go traffic wasn't even issue.
I think next I am going to experiment with disabling the fan to see if the AC works without it while moving on the highway. I could save myself some amps by making it not run when not needed.
The story behind me figuring this out:
I had my truck idling for a while outside my friend's apartment while unloading a trailer of furniture on Tuesday night. It was sitting for maybe 20 minutes at idle. The AC was turned off. After about 20 minutes, my friend yells to me "Hey matt, your truck is smoking!" The expansion tank was boiling and the temp gauge was pegged. I started following wires to see why the fan wasn't turning on and found my error. As soon as I got the fan turning, the temperature dropped right back to normal. Poured some water in, good to go. Now I need to re-wire the fan controller so it works properly.