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Unread 07-23-2010, 08:08 AM   #1
ohfourtj
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2004 TJ Wrangler 
 
Join Date: Feb 2005
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Can't change heat/ac temperature

Just did a search and couldn't find anything relating to this problem.

About a year ago I had to replace the switch that controls the speeds for the heat/ac and it fixed my one speed issue. A month or two later I lost the ability to change the temperature of the air flowing out. Is there a replacement part for this and how would I go about fixing it? Is it possible that the hot/cold knob is not engaging properly or is there a thermostat behind it? Any help would be greatly appreciated.

It is a 2004 TJ Sport 6 cyl. with 40,000 miles.

Thanks

-Chris

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Unread 07-23-2010, 08:14 AM   #2
TheBoogieman
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1998 TJ Wrangler 
 
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Pull the knob off and check it for cracks.Mine did the same thing and the knob itself was broken.
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Unread 07-23-2010, 11:03 AM   #3
bigchevyman24
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2000 WJ 
 
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Look under the dash below the glovebox. There should be a cable that runs from behind the a/c control that moves a little lever down there side to side. At least that's how the earlier TJ's are. The cable may have come off or broke. That happened to my old 97...
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Unread 07-23-2010, 11:37 AM   #4
LandoCommando
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1997 TJ Wrangler 
 
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The blend door might be busted.
Try a search on that.
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Unread 07-24-2010, 08:28 PM   #5
ohfourtj
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Thanks for the suggestions guys. So far I know the knobs are in good shape and will try out the other two suggestions tomorrow.

-Chris
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Unread 07-24-2010, 08:58 PM   #6
TinkerAB
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1997 TJ Wrangler 
 
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my hot and cold adjustment has never worked i have to reach under the passenger dash and pull the cable by hand.
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Unread 07-24-2010, 09:52 PM   #7
LandoCommando
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Quote:
Originally Posted by adam52604 View Post
my hot and cold adjustment has never worked i have to reach under the passenger dash and pull the cable by hand.
In older TJs like ours the actuator is very much mechanical.
Our temp sliders have a cable that go directly to the blend door.
In newer TJ models it is a knob and an electrical connection that operates a motor on the door.
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