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Discussion Starter · #1 ·
When I'm using the heater in my TJ I noticed something was up. It seems that when you turn the air strength knob to the 3rd dot it doesn't work. It works on 4(high) and 2(low-medium) but not the 3rd. Can anyone tell me how to fix it?
 

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blower resistor, only like $25 @ local auto parts. Mine just went out too, not too hard to fix. its under the glove box.
 

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Under a shield under the glove box. 4 (8mm) screws to remove the shield. Front two screws just loosen, as bracket is sloted, back screws come out. Two screws holding the resistor in place, remove them, then use needle nose pliers to remove the red clip on the plug, and unplug. It takes longer to find the screws on the shield than to make the repair.

Just changed mine last weekend. I also stuck the shop vac in the hole to remove any crap & dust that might have been in the system. My resistor was covered with some knid of hair, yuck!
 

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Just did mine 2 weeks ago. Common problem.
 

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ya i only had 2 speeds on my 2001 and i replaced the resistor and it turned out to be a burnt switch, that one is under the shield, but when i replaced the resistor on my 2005, there was no shield and it was higher in the heater box, almost directly behind the glove box what year u got ?
 

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This may not be the case in your TJ, but it has become a common occurrence for a lot of us on the older TJ's (Do a forum search and you will see what I am talking about). Your HVAC switch may eventually crap out as well. The contacts in the back of the switch tend to melt in older TJ's. This is because your heater blower motor is worn and is encountering more friction on its bearings. The added resistance results in more current draw through the HVAC wiring, crapping out resistors and melting switches. Just something to look forward to in the future!

Check out these posts:

http://www.wranglerforum.com/f5/heater-fan-control-16174.html

Here's a cheap fix:
http://www.wranglerforum.com/f5/writeup-for-jp-blower-heater-switch-fix-52716.html

The more permanent fix will be to swap out you blower motor:

http://www.wranglerforum.com/f5/swapping-out-heater-blower-motor-49413.html
 
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