Hello everyone, I have a 1991 Cherokee with the 4.0. It has been a good rig so far as it sat for 9 years before I bought it, still working out the small bugs. I drive it around town for a bit and it starts to get hot, like in the 230 range but the fan never comes on. If I start the air conditioner it will come on but with it off the fan will never kick, any ideas where to start?

 

The temp will continue to climb after this I usually just stop driving it, could it be a sensor or something?

 

It's good to mention what maintenance you have done to the cooling system thus far so we can lead you in the right direction

 

I dumped all of the coolant when I got the jeep and put fresh back in, I did not replace the thermostat but it's not climbing temperature fast, just after I drive for quite a while in town, i'm just curious why the fan will not kick on, only when the ac is running does it do anything.