heater fan doesn't work - JeepForum.com
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post #1 of 5 Old 12-03-2013, 01:02 PM Thread Starter
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I have a 2000 Cherokee.my heater fan stoped so I thought proly the blower and bypassed the switch with a straight wire and blower motor still works. So, being on a tight budget, to the salvage yard I go and come back with a switch assembly. Changed it and the same thing, it doesn't work. Any suggestions would be appreciated

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post #2 of 5 Old 12-03-2013, 01:10 PM
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I am new to the forum and do not know much about cars. I had the same issue in my 2000 WJ Limited. I had to replace the resistor which powers the blower motor and its located right behind the glove compartment. I purchased mine right down the street at Advance Auto Parts for $155.00!!! I soon as I put the new one in the air started working immediatley. It could also just be a connector. I would run some tests to see whats getting power and whats not. Thats what I did before spending the money.
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post #3 of 5 Old 12-03-2013, 02:43 PM Thread Starter
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Thank you that is rather expensive I'll do the test first as you suggested
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post #4 of 5 Old 12-03-2013, 07:32 PM
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usually if the resistor goes it's because on the blower motor fins are worn and spinning too fast. If you replace the blower it will blow the new resistor in a short while. I just replaced both a few months ago as my fan only worked on high~

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post #5 of 5 Old 12-05-2013, 06:54 PM
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The climate control fan system consists of the fan itself, a blower motor resistor, wires, a relay, and the switch.

Physically inspect them all, looking for and smelling for any melted or damaged components. Resistor failure is rather common, and may or may not be a sign of other issues. Probably 80% of the time a fresh resistor will cure any fan problems.


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