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Old 07-06-2012, 05:25 PM   #1
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2002 tj wrangler A/C driving me crazy

I have a 2002 TJ 4.0L L6. A local mechanic didn't have time to work on it the other day but he says the system is fully charged, the compressor just wouldn't kick on. When its been sitting and cooler out, it cuts on fine, blows cold. Once I get going, hot air again.

I already know I have a blend door problem, it always starts blowing from the defrost vents, then shifts to the regular vents. My question is, would this be the cause of the compressor not kicking on?

Thanks

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Old 07-06-2012, 05:30 PM   #2
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The doors are seperate from the compressor.Id start with diag the compressor.Its really a simple system.

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Old 07-06-2012, 05:33 PM   #3
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Clogged vaccum line?
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Old 07-06-2012, 05:40 PM   #4
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Add he is positive its full? I believe its 1.25lbs
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Old 07-06-2012, 05:43 PM   #5
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I have a 2004 and my blend door went out on me. I have the motorized blend door and took it off and inspected it. I found out that I had a blown resistor. Stealership wanted $130 and I had the resistor replaced for a six pack of diet coke.
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Old 07-06-2012, 06:59 PM   #6
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Ha, nice. Thanks guys. Yeah I replaced the resistor already cuz I was having problems with the fan speeds, but now it just blows outta the defrost vents before switching. It could be a clogged line but I notice a lot of condensation on the accumulator dryer once the compressor stops working. Is this normal?
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Old 07-06-2012, 07:02 PM   #7
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Switch unit?
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Old 07-07-2012, 05:51 PM   #8
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switch unit? I don't see any problems with the vacuum hoses. All I know is my A/C will only work for a little while at night or if it is cloudy. When it's hot outside (and it IS, I live in South Florida!) it will not work.
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Old 07-07-2012, 05:53 PM   #9
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Ur switch unit (rurns everything on and off) could be going bad- i had to replace mine last week
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Old 07-07-2012, 06:00 PM   #10
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The actual in dash unit with the controls? Could be...I'll look into it. Thank you!
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Old 07-08-2012, 05:15 AM   #11
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Yup- i found mine had been fried and actually melted to the wiring harness- changed it and now my a/c blows colder and fast like a dirty pirate hooker

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