Question about 2002 Jeep Grand Cherokee

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My ac loses gas in 3 days i had a pressure test

2003 jeep grand cherokee 1 )my ac loses gas in 3 days i had a pressure test done and there are no leaks . 2)The 2 passenger vents blow hot air with ac on what could be the problem be.

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Hello. Thanks for choosing Fixya! I can help you with this problem. The problem so far is that the place that is testing your a/c for leaks either does not have the necessary equipment, or does not have the knowledge to thoroughly look. You can put a dye into the system to check for the condensate that drips out of the evaporator while the A/C is operating.
So, in summary you do have a leak, probably in the evaporator which can be confirmed through a dye test. Call around and find a shop that does the dye test so that you can isolate the exact location of the leak... since it is most likely in the evaporator, expect that the evaporator will have to be replaced. Good luck with it. Regards, Joe

Posted on Nov 16, 2009

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If it loses gas in 3 days, it has to leak, there is no other option. Being a Jeep. I bet the "evaporator" leaks.

Posted on Nov 16, 2009

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You should have someone leak check the system with dye and gas sniffer. the most common problem with these jeeps is the evaporator leaking.

Posted on Nov 16, 2009

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the loose is serious
the collant called AF, (antifreeze ) can only go a few places.
1: to the ground.
2: to the passengers does, heater core leak.
3: to the oil pan, did you check oil for AF contam?
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5: to the exhaust tail pipe tip, called STEAM.

find the the path and problem is obvious.

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