AC Line Blocked??

[Mike Marks]

Have a 2002 Yukon Denali with 93000 miles. Ac is blowing warm. The pump is functioning properly and it has no leaks in the system. Ac line under hood is ice cold toward the firewall in the pic attached, but on the other side of the coupler it is hot! Could there be a blockage where the 2 lines join? Anyone ever come across a issue like this and figured out a remedy.....thanks

 

[Antdogbmx]

93,000 nice!!!!!!!!

 

[ks03]

That’s where the restricted orifice lives, there should be a big temperature difference there while the system is operating

 

[OR VietVet]

https://www.rockauto.com/en/moreinfo.php?pk=84492&cc=1380372&jsn=2884

https://www.rockauto.com/en/moreinfo.php?pk=947996&cc=1380372&jsn=2886

Two different designs of the orifice and could be the cause of the warm air. I would know more, since you said the a/c compressor-not a pump-and there is no leaks in the system. How do you know you have no leaks? I am assuming the low pressure switch is working because I am assuming the clutch on the compressor is engaged. I need some a/c gauge readings to go further.

In the future, if you say you know something is good/working, explain how you determined that.