88cherokeepyles

Heres a photo. Its on the top, driver side of the radiator. electric fan doesnt run, gotta wonder whats up with that and while I was looking, I found this plug in. looks important maybe?? Anyone? Trying to take off on a trip tomorrow.

BobF

According to my 90 manual, it's the 'Electric Cooling Fan Thermal Switch'.
It's supposed to turn on at 210 degrees normally. At least mine does.

https://www.cherokeeforum.com/f2/sen...an-turn-75765/ see post #8

Radi

Two pins? Possibly the temp. sensor that controls the aux fan?

88cherokeepyles

The thJng is, I don't know where the other end plugs into! What does that manual say it connects up to?

cruiser54

If it's at the TOP of the driver's side radiator, it's the plug for the electric fan itself.

88cherokeepyles

yup. So I trace the wires from that and there should be a two prong plug somehwere else that is loose??

mike mike

Bet if you pull the air box you'll find the other half.

88cherokeepyles

Got it off right now, but it's not anything obvious

cruiser54

Beat me to it.

88cherokeepyles

I had it off and still dont see anything. JUst need someone with a renix to look at their jeep and see....

cruiser54

See the little cube shaped relay on the driver's side inner fender? Follow that big wire loom forward and it splits to 2 smaller looms. The plug for the fan is on one of them.

5-90

Thermal Fan Switch, it's peculiar to RENIX. You can find information all over - start your searches from "Thermal Fan Switch" and/or "TFS" and/or "RENIX" - in whatever combination you like.

cruiser54

Now that my eyes are focusing after 3 cups of coffee, I can see the photo better. That's on the BOTTOM of the radiator and is indeed the thermal switch. Same as I posted earlier, follow the same loom and you'll find that one, too.