karls10jk

Thanks for updating your thread for the good of everyone else. We're glad to hear your problem is fixed as well.

Rubiconarias

I replaced the low and high speed cooling fan sensors,the cooling temp sensor,put a new fan and radiator in my 08 jku and everything seems normal until I turn my AC on,that's when the fan turns off and on and since the AC overrides the engine temp when it comes to the fan it's causing me to overheat,if I drive with no AC it's fine,fan turns on based off of engine cooling temp. Don't know what I'm missing.

jgray

Check the hi pressure switch in the a/c system. If the head pressure in the system is too hi the fan will cycle on and off constantly. I would start there mine was only $50 and it fixed the issue