Bad A/C compressor?
Thread Starter
Burning Brakes
Joined: Jul 2010
Posts: 812
Likes: 532
From: Miami, Fl
Bad A/C compressor?
A/C hasn't been cooling very well. Threw some gauges on it over the weekend at the low side was at 29 PSI and the high at 115 or so. Ambient temperature was ~80-85 and readings were taken at idle. Compressor clutch is engaging. I checked the manual and my specific scenario isn't mentioned in there. Does it sound like the compressor needs replacement?
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,320
Likes: 3,927
From: Cape Coral, Florida
Sounds like low on refrigerant…high side should be over 200…I’d say take it to an AC shop and let them look for a leak…if you are low on refrigerant there is a leak…fix that if and then evacuate the system and then add the CORRECT amount of refrigerant !!
Last edited by C5 Diag; Mar 14, 2022 at 01:21 PM.
Le Mans Master
Joined: Aug 2005
Posts: 7,392
Likes: 216
From: Merritt Island, FL
Agree with above. Pressures give some idea about charge status but an accurate weight of recovered refrigerant is your best bet to determine if the low pressures are due to a low charge vs a worn out compressor.
