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05-29-2011, 11:27 PM
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#1 | |
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AF Newbie
Join Date: May 2011
Location: gretna, Louisiana
Posts: 2
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2002 yukon ac blows hott but cant find any leaks
Hi, i have a 2002 yukon and all of a sudden the ac started blowing hot. We put freon in it and it stays cool for a day then it blows hot again. We had it checked for leaks but they can not find any leaks. ac mechanic is telling me that it can be something that is in the rear of the vehicle causing it to continue to blow hot he also told me where the problem might be coming from i have to remove the seats in order to get to it. if anyone knows anything about this please reply!!!!
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05-30-2011, 10:24 AM
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#2 | |
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AF Enthusiast
Join Date: Mar 2008
Location: garner, North Carolina
Posts: 3,579
Thanks: 86
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Re: 2002 yukon ac blows hott but cant find any leaks
What does the 134a guages read?
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05-30-2011, 08:22 PM
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#3 | |
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AF Newbie
Thread starter
Join Date: May 2011
Location: gretna, Louisiana
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Re: 2002 yukon ac blows hott but cant find any leaks
How do i read that?
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06-13-2011, 01:09 AM
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#4 | |
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AF Newbie
Join Date: Aug 2004
Location: Waipahu, Hawaii
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Re: 2002 yukon ac blows hott but cant find any leaks
Sounds to me to be more of a selector door problem, like the door is not moving from heater to A/C mode. Sounds like you need another mechanic too.
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06-26-2011, 01:53 PM
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#5 | |
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AF Regular
Join Date: Nov 2004
Location: Mechanicsville, Maryland
Posts: 256
Thanks: 1
Thanked 47 Times in 44 Posts
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Re: 2002 yukon ac blows hott but cant find any leaks
Temperature mode door or cooling fan clutch. Been seeing lots of both this summer. Gauges would help verify the fan clutch. High side pressure will be well above 300 psi, maybe even 400 psi. Is the compressor running when it starts blowing hot? Have had cycling switch problems too. It's out on accumulator. If you tap it and the compressor come on, bingo. Easy fix
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