I realize this was discussed a bit on the OS but I would like to start another session here so people have it for future reference.
Basically what is going is that my 05 Envoy XL has poor AC performance at idle. When I drive it a ways over say 40 MPH the air conditioning gets cooler but not icy cold like it should. A few months ago I added two small cans of refrigerant according to the instructions on the can and brought it up into the green. The AC seemed fine for a while.
Recently around here it has been over 100 degrees and high humidity. I was sure that the AC would be just fine but it has once again reverted to the same symptoms of poor cooling at idle.
So today what I did was replace the fan clutch hoping that that would be the last item to blame. Obviously I am here and it still doesn't work correctly. I am currently at a loss as to whats going on. I would have thought that replacing the clutch would have solved the problem because so many people with EXT/XL's on the OS said that putting a new Dorman clutch fixed their problem. I am going to go check the pressure again and see what I can see. In the mean time does anyone have any suggestions before I send it in to have a certified HVAC tech take a look at it? Worst case scenario is that I have a leak somewhere but lets hope not. If it is a leak its relatively slow. Thanks!![Smile :smile: :smile:](/forums/smilies/smile.gif)
Basically what is going is that my 05 Envoy XL has poor AC performance at idle. When I drive it a ways over say 40 MPH the air conditioning gets cooler but not icy cold like it should. A few months ago I added two small cans of refrigerant according to the instructions on the can and brought it up into the green. The AC seemed fine for a while.
Recently around here it has been over 100 degrees and high humidity. I was sure that the AC would be just fine but it has once again reverted to the same symptoms of poor cooling at idle.
So today what I did was replace the fan clutch hoping that that would be the last item to blame. Obviously I am here and it still doesn't work correctly. I am currently at a loss as to whats going on. I would have thought that replacing the clutch would have solved the problem because so many people with EXT/XL's on the OS said that putting a new Dorman clutch fixed their problem. I am going to go check the pressure again and see what I can see. In the mean time does anyone have any suggestions before I send it in to have a certified HVAC tech take a look at it? Worst case scenario is that I have a leak somewhere but lets hope not. If it is a leak its relatively slow. Thanks!
![Smile :smile: :smile:](/forums/smilies/smile.gif)