Someone had mentioned on here that after installing an efan setup there headlights would kinda blink. After that post I noticed mine were doing that and thought ah maybe it's from the fans. I realized however after actually paying attention that it does it on a consistent basis when the fans ain't even on. I can fire up the truck and the lights will flash. It's more of a go quick dim then back to normal but it does it a lot. I think tonight I might have narrowed it down to when the AC clutch does it's kick in deal. Ya know when the clutch spins every so often.

Would a bigger alt cure this issue or what do I need to do to make it stop? Now that I notice it doing it. it's pretty freaking annoying and it's pissing me off.

How do I find out which alt I have in the first place?

 

It would be on your build sheet if you have one.

 

I guess I'll have to get one

 

Might be on the sticker on the Alt, if it's still there.

 

Well I thought I had this fixed but it has come back. I have since realized that my fans are turning on and off all the time. I can start the truck and the fans will turn on then turn off. A minute or so later they turn back on then go off. I'm worried that it's the sensor. I really hope it's not that cause it's a bitch to get to. I'm thinking if it was a bad relay only one fan would turn on not both.

 

Where does your controller get its temp reading from?

 

I have a sensor in the intake. It's under the ac bracket. I have the bracket drilled but not sure if it's enough to get that sensor out and a new one in. it's technically not a controller it's all done by relays.

 

Have it wired to a temp switch? Not a bad plan. Given the behavior though..... it really looks like the switch has an issue, or, some wires are grounding out somewhere. What is the on temp for the switch? Is it possible the switch is getting false readings from something else that gets nice and warm that is nearby?

 

So the e fan(s) are wired into the stock sensor?

 

I would take a long hard look at the sensor itself then. (sorry 'bout that chief. )