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Old 06-14-2010, 09:24 PM   #1
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Air Conditioner Problem

Hi everybody, does anybody know why my jeep's AC fan blows on level 1,2,&3 but when I turn it to 4 the fan turns off.

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Old 06-14-2010, 10:18 PM   #2
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Sounds like a bad switch...

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Old 06-14-2010, 10:52 PM   #3
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Don't tj's have wiring issues on the blower motors?
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Old 06-14-2010, 10:57 PM   #4
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I'll bet anything the blower motor relay is bad. It's located in the wire harness connector near right end or heater-a/c housing.`
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Old 06-14-2010, 11:25 PM   #5
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Quote:
Originally Posted by enginenine View Post
Don't tj's have wiring issues on the blower motors?
Yeah and I think it usually results in a bad/melted switch...lol
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Old 06-15-2010, 02:07 AM   #6
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What's more common is that 4 works, the others don't. Probably the switch, search the threads, tons on this issue.
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Old 06-15-2010, 06:35 AM   #7
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Quote:
Originally Posted by legman68 View Post
What's more common is that 4 works, the others don't. Probably the switch, search the threads, tons on this issue.
Yup, when 4 works and the others don't, 99% of the time that's the blower resistor.
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Old 06-16-2010, 03:34 PM   #8
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High not working, it is a bad switch. Pull three-knob HVAC unit and look in the back. Make sure you don't have a melted switch:


To replace it, look at this link:

http://www.wranglerforum.com/f5/heat...rol-16174.html

You should know that eventually, the new switch will melt too unless you replace the aging blower motor or add a relay to your two highest settings:

http://www.wranglerforum.com/f5/writ...fix-52716.html

http://www.wranglerforum.com/f5/swap...tor-49413.html
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Old 06-17-2010, 12:45 AM   #9
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You know , Ive read that article a couple of times Can anybody explain in simple terms how to wire in those relays? I recently got everything working, but don't want to have to replace switch again

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