04 Envoy 4.2L
I've noticed that my AC compressor on my Envoy squeals when engaged - It will almost chirp while engaged (sounds like a bad bearing to me). I also have noticed that the AC line going over the engine frosts up VERY easily and the AC compressor DOES NOT cycle off very often. I've also noticed that when parked, there is a LOT of moisture that comes out from under the passenger side of the engine (where the AC drain is). It is getting colder here, but I've had the problem for quite a while now.
So far, what I've done:
1) Checked/changed the belt.
2) Checked the AC clutch (pulled it off - it had rusty spots, so I cleaned them off).
3) Checked low side pressure (reads good for temperature).
4) Checked the Ac compressor pulley/bearing.
I'm hoping it's nothing inside in the compressor, but I am really thinking that is the likely 'cause' of the issues.
To add to the discussion - I had a bad temp sensor a while back and I replaced it as the AC would NOT engage (temp sensor would show a very low outside temp). Temp sensor is reading accurately on HVAC unit.
I've noticed that my AC compressor on my Envoy squeals when engaged - It will almost chirp while engaged (sounds like a bad bearing to me). I also have noticed that the AC line going over the engine frosts up VERY easily and the AC compressor DOES NOT cycle off very often. I've also noticed that when parked, there is a LOT of moisture that comes out from under the passenger side of the engine (where the AC drain is). It is getting colder here, but I've had the problem for quite a while now.
So far, what I've done:
1) Checked/changed the belt.
2) Checked the AC clutch (pulled it off - it had rusty spots, so I cleaned them off).
3) Checked low side pressure (reads good for temperature).
4) Checked the Ac compressor pulley/bearing.
I'm hoping it's nothing inside in the compressor, but I am really thinking that is the likely 'cause' of the issues.
To add to the discussion - I had a bad temp sensor a while back and I replaced it as the AC would NOT engage (temp sensor would show a very low outside temp). Temp sensor is reading accurately on HVAC unit.