Cooling fan not staying on
#1
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Join Date: May 2013
Location: Asheville, NC
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Year: 1999
Engine: 4.0
Cooling fan not staying on
I really nees some help here folks. Basic background is, my cooling fan is wired up to a switch via the spliced blu/pink wire leading from the computer. Here's some more background:
https://www.cherokeeforum.com/f89/cooling-fan-wiring-issue-226587/
Now, I have seen the fan come on via the switch and the a/c but it turns off almost immediately. I have even unplugged the coolant temp sensor and it still won't come on. I am getting proper voltage to the fuse/relay box and the fuses are good. I have yet to test the relay.
What could be next? Relay? Burnt wire? Bad connector?
https://www.cherokeeforum.com/f89/cooling-fan-wiring-issue-226587/
Now, I have seen the fan come on via the switch and the a/c but it turns off almost immediately. I have even unplugged the coolant temp sensor and it still won't come on. I am getting proper voltage to the fuse/relay box and the fuses are good. I have yet to test the relay.
What could be next? Relay? Burnt wire? Bad connector?
#2
CF Veteran
I think you answered your own question. Test the relay.
It is an electromagnetic switch. And coming on for a moment or two, and then clicking back off would not be out of question for a relay that needs to be replaced. So it is a good next test step.
It is an electromagnetic switch. And coming on for a moment or two, and then clicking back off would not be out of question for a relay that needs to be replaced. So it is a good next test step.
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