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  #1  
Old 07-22-2016, 02:33 PM
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AC issue

Hello,

My Jeep 4.7 is throwing so so cold air from the 2 front left panels but just hot normal air from right ones and back vents. Do I just need an ac fillup? Did one 4 years ago.

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  #2  
Old 07-22-2016, 02:56 PM
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Re: AC issue

I haven't experienced it personally but there are a few threads with folks here having the same problem. Usually always related to the blend door, usually a small gear. There are threads with instructions on how to repair yourself if you are a DIY'er. The small parts are available through the dealer parts dept. Try blend door in the search box. If too many threads, limit the search to thread titles only.
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Old 07-22-2016, 04:50 PM
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Re: AC issue

Sounds like you just need a charge.............
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Old 07-22-2016, 05:16 PM
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Re: AC issue

try the charge cheap and fast i had one vent that was not as cold as others recharged now all are good
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Old 07-22-2016, 05:29 PM
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Re: AC issue

Just be sure to buy the charging kit with a gauge. You don't want to over charge the system.
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Old 07-24-2016, 01:06 AM
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Re: AC issue

I'd get it checked by a shop first. A/C shouldn't leak, so there shouldn't be a need to recharge it.
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Old 07-24-2016, 05:15 AM
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Re: AC issue

True AC systems should not leak, but they do. As the system ages the seals shrink and allow leakage. I would put a set of gauges on the system and check it out.
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Old 07-24-2016, 07:24 AM
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Re: AC issue

Nothing wrong with checking the refrigerant charge but that really has nothing to do with why one side blows hotter or colder than the other. That's an issue with the blend doors.
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Old 07-24-2016, 11:10 AM
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Re: AC issue

If I remember correctly, the Loredo has the single system. If it was the blend door heat would be from all the vents.
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Old 07-29-2016, 09:54 AM
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Re: AC issue

Cool, I'll try a recharge for now..

I found this info as well:

"Actually, the blend door actuators are electric stepper motors and will shear off the plastic shafts of the blend doors. The dual zone heater has 2, the one on the front is for the driver's side, and the one in the rear (that you can't get to) is for the passenger's side. In order to get to the rear one, you have to remove the whole unit from the car. Excellent design by idiots. The blend doors are what controls the temperature by "blending" heated or chilled air with outside air. The Mode switch is vacuum operated and sends air to the various ducts and the fan switch is electrical. On the automatic climate control, all this is done by a module. You set the temp and the module decides what to do."

and

"Since it's blowing cold out of one side i'm guessing the system is probably ok. I'm fairly confident that you likely have a bad blend door and/or actuator. I know there is a way to put some of the automatic climate controls into a test mode and pull faults from the face of the climate head, but I can't come across the write up."

and

"Okay! Here we go with the AZC selftest. Press and hold the A/c and Recirc buttons and turn the left temp control on detent CW. Still holding the buttons, the display will light up all the segments. Release the buttons and the display will go dark for a moment, then list any codes for one second each in sequence. If there are no codes set, a "0" will appear. The codes will continue to be repeated until you turn the left temp control one detent CW or turn off the ignition."
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Old 08-26-2016, 08:45 AM
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Thanks for all the answers. Did a recharge and everything is fine now.
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