HI !



I have a 2012 Chevy Impala with the 3.6 and 150k miles. The car barely and slowly takes 1 can of refrigerant.



Bought car about a month ago so I don't now history of it. But the compressor on in it look very recently replaced.



System holds vacuum at -25 to -30



-The compressor looks like its been replaced lately, also I tried another from a salvage yard. - same outcome.



-The compressor clutch engages when I add refrigerant to the system. Also turns on/off from switch.



-Both high side and low side gauge is a 50-70 psi. (Always the same though on high and low side)



-I changed the expansion valve with new part.



-psi doesn't change on gauges if I turn the compressor on or off or revving engine.



-I don't feel any of the lines from the compressor getting cold or any of the other lines or components I can touch.



I'm not sure what to do here. Can a blow air or smoke through the condenser and evaporator to see if its plugged? Can I purchase something to flush things out?



It looks like the dryer is internal in the condenser and I don't think this has an orifice tube filter/



Any other ideas what I'm doing wrong?



Please help!!!!! Thanks,!!!!!



Nick

 

First thing I would do personally before you go throwing anymore parts at it, have the A/C system serviced with an A/C machine, when the compressor was replaced this may not have been done, there’s probably air trapped inside the lines and only a complete service with the machine can remove that.