auxiliary fan not starting when a/c turns on
It's a 2000 sport. I put a new rad cap on and I think it stopped the bubbling sound when I turn it off. But I am sure it gets hot after I turn it off, beacuase if I try to turn it on 5 minutes after getting someplace it gets hard to start. The fan does not come on with the a/c, that is my problem.
Are you guys sure it's the relay? I was quoted $80 for the original relay! And $35 dollars for a replacement at Autozone. My fan works when it gets over 220 but it is not starting with the a/c. Please help!
Thanks for the diagram, but my a/c clutch and low pressure switch are fine. The a/c in my rig works great. I just don't know what's happening at the cooling fan relay (not ilustrated in the diagram) because I believe that if the cooling fan relay was fried the fan would not receive any current. Unless the fan receives voltage on another circuit from the temperature sending unit.
i just wired mine to a switch saturday and its the best thing i ever did! it dropped my temp 5 to 10 degrees! i live in alabama so it can get up to over 100 degrees no problem every day! so it helped alot having it on all the time then turning it off when i shut the xj off, oh and you wont forget to turn it off you can hear it runnin inless your deaf
Senior Member


Joined: Apr 2009
Posts: 819
Likes: 7
From: VA
Year: 1998
Model: Cherokee (XJ)
Engine: 4.0
i just wired mine to a switch saturday and its the best thing i ever did! it dropped my temp 5 to 10 degrees! i live in alabama so it can get up to over 100 degrees no problem every day! so it helped alot having it on all the time then turning it off when i shut the xj off, oh and you wont forget to turn it off you can hear it runnin inless your deaf
x2
Wait! Here is your answer. In 2000 they changed when the elec fan came on. It no longer turns on whenever the a/c is on, only when the temp surpasses 210, around ~212-215. Nothing is broken, I thought the same thing after I sold my 98 and started driving a 2000. The FSM for your year should affirm this.
To test, take it for a long highway drive to get it good and warm, then stop somewhere and let it idle allowing the temp to start to creep up, the elec fan should come once the temp is high enough and then turn off once the temp goes back down to 210. trust me. thats what it is.
To test, take it for a long highway drive to get it good and warm, then stop somewhere and let it idle allowing the temp to start to creep up, the elec fan should come once the temp is high enough and then turn off once the temp goes back down to 210. trust me. thats what it is.
Wait! Here is your answer. In 2000 they changed when the elec fan came on. It no longer turns on whenever the a/c is on, only when the temp surpasses 210, around ~212-215. Nothing is broken, I thought the same thing after I sold my 98 and started driving a 2000. The FSM for your year should affirm this.
To test, take it for a long highway drive to get it good and warm, then stop somewhere and let it idle allowing the temp to start to creep up, the elec fan should come once the temp is high enough and then turn off once the temp goes back down to 210. trust me. that's what it is.
To test, take it for a long highway drive to get it good and warm, then stop somewhere and let it idle allowing the temp to start to creep up, the elec fan should come once the temp is high enough and then turn off once the temp goes back down to 210. trust me. that's what it is.
yep switch is a good idea! mine is inside my center consol its cool!
i will post up pics of the wiring and how i hooked it up when done


