AC not cooling
#1
Launching!
Thread Starter
iTrader: (9)
Join Date: Nov 2006
Location: Texas
Posts: 297
Likes: 0
Received 0 Likes
on
0 Posts
AC not cooling
The AC in my 2001 Chevy is not cooling. I put my gauges on it and it has 135psi static pressure at 90 degrees outdoor temperature. When the compressor is engaged the low side is 30-40psi and the high side climbed to 400psi before I shut off the system. I assume the high pressure switch is not working, but this does not explain why the system is not cooling.
I have already replaced the orifice tube and accumulator.
What the hell is going on?
I have already replaced the orifice tube and accumulator.
What the hell is going on?
#3
Launching!
Thread Starter
iTrader: (9)
Join Date: Nov 2006
Location: Texas
Posts: 297
Likes: 0
Received 0 Likes
on
0 Posts
Yes, I pulled 28 inches of mercury and held it for 30 minutes before I recharged the system. I keep my high and low pressure lines on my gauges pressurized and I purged the fill line before I added refrigerant.
Last edited by sbw9056; 09-14-2009 at 11:27 AM.
#5
First off the high pressure switch will not turn off the compressor until the high side pressure exceeds 420 psi. I attached a diagnostic sheet for the AC system when the low pressure is within spec and the high side pressure is too high.
Thread
Thread Starter
Forum
Replies
Last Post
carid
Sponsor's Announcements, Sales, and Specials
0
10-01-2015 09:22 AM
Wrecker 426
Tuning, Diagnostics, Electronics, and Wiring
1
09-30-2015 09:39 PM
carid
Sponsor's Announcements, Sales, and Specials
0
09-10-2015 09:07 AM