'02 GC Overland, AC not turn on in the cold? - JeepForum.com
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Unread 12-11-2014, 09:35 AM   #1
sloppytot
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'02 GC Overland, AC not turn on in the cold?

Good morning, all,

Looking at an '02 GC Overland to purchase. Test drove it yesterday. As I was testing everything inside of the truck, the A/C wouldn't kick on. I would turn temp knob to cold/blue, and push the A/C button, but the A/C light would come on for a second then turn off. The guy showing me the car said that he believes these models have a sensor that won't engage the AC when the outside temp is below a certain temp. It was in the high 30's F yesterday so it was cold.

Is there any truth to this or does it sound like an issue that they were hoping I would overlook?

Also, are there any things I should check that are particular to the 4.7 HO motors/trans/quadadrive system? I did the basic stuff; hard braking, hard accel, listened for ticking & knocking, oil looked clean/free of metal shavings, drove straight, clean carfax w/ exception of one open recall - #M35 ORC FILTER CIRCUIT from 01/13. I assume it hasn't been resolved since it's showing on the carfax. If there are any known issues that I should go back to check out before purchasing, please advise.

Thanks all!

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Unread 12-11-2014, 10:20 AM   #2
alfaitalia
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That is true and also AC wont come on for more than a second or so if the right selector knob is on auto and its already cool in the Jeep.
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Unread 12-11-2014, 10:35 AM   #3
sloppytot
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Ok, glad to hear. But is there any combination of settings that will force it to go on so I can at least confirm it's blowing cold prior to purchase?
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Unread 12-11-2014, 11:31 AM   #4
86cj74.2L
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There is not enough pressure in the AC system to keep the compressor engaged for mor than a few seconds.

The pressure of 134 is temperature dependent.
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Unread 12-11-2014, 11:42 AM   #5
mr312712
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My 04 Overland does the same thing but my A/C light stays on. But the compressor will cycle on and off which Is normal for 20 degrees. But I may be wrong but It should at least turn on.
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Unread 12-11-2014, 11:43 AM   #6
ChrisHager
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Quote:
Originally Posted by sloppytot View Post
Also, are there any things I should check that are particular to the 4.7 HO motors/trans/quadadrive system?
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Unread 12-11-2014, 01:47 PM   #7
99SK04GTX
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The AC compressor will cycle on and off when the defroster is engaged; the heater core heats the air and the AC dries the air.
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