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Old 05-20-2007, 11:45 PM   #1
Join Date: May 2007
Posts: 65
2000 TJ Air Conditioning

Hey guys I have a question regarding the operation of the A/C. When the A/C is on I have noticed that as I accelerate the cold air blown out only the defroster vent. As the Jeep settles at 55 mph it still has a considerable amount of cold blowing out of the defroster duct as opposed to the dash vents. If I am going much over 55 mph the cold only comes out the defroster duct. Is this normal for the 2000 TJ? The only reason I am concerned about this oddity is that I just had the A/C installed on the Jeep the parts used are all mopar.

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Old 05-20-2007, 11:52 PM   #2
Join Date: Nov 2005
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Not normal. Sounds to me like a vacuum leak. Some of the HVAC system controls are vacuum actuated. If the problem is consistent with throttle control I would say you might have a vacuum line closing under pressure. There are specific designation to suction ratings in pressure and vacuum lines. I can look them up for you tomorrow but sounds to me like it needs to go back to whoever installed it.

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Old 05-21-2007, 12:04 AM   #3
Join Date: May 2007
Posts: 65
Thanks for the help, Mr. Clifford. I will definitely be calling the shop tomorrow.
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Old 05-21-2007, 01:49 AM   #4
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yea im with Mr C. sounds like vacc to me
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