A/C troubleshooting
#1
Teching In
Thread Starter
Join Date: Oct 2011
Location: Longview, TX
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
A/C troubleshooting
Hey, I just bought a '99 Z28 and the previous owner informed me that the a/c system needed a recharge as it was cold at the beginning of the summer but now it doesn't blow cold. Sure enough, no cold. Does anybody have a link to a site or a thread here somewhere (I've been looking for a couple days) that gives detailed troubleshooting for the A/C system?
So far, I've checked that the static pressure (with the a/c off) is around 80 psi. When I first turned the a/c on, the LP went to about 28 psi but the HP was only 90-100 psi. I've put in 3 12oz cans of R134a and the LP is still about 28 psi and the HP is near 150 psi. Do I add another can? Is this indicative of a problem somewhere in the system? Appreciate any help or referral.
Thanks!
So far, I've checked that the static pressure (with the a/c off) is around 80 psi. When I first turned the a/c on, the LP went to about 28 psi but the HP was only 90-100 psi. I've put in 3 12oz cans of R134a and the LP is still about 28 psi and the HP is near 150 psi. Do I add another can? Is this indicative of a problem somewhere in the system? Appreciate any help or referral.
Thanks!
#3
Teching In
Thread Starter
Join Date: Oct 2011
Location: Longview, TX
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
Thanks. I put a 3oz can of Stop Leak in it, which says it contains a dye for leak detection. Keeping an eye out for the leak and will be sure to check around the compressor.
#4
TECH Fanatic
iTrader: (10)
Get a UV light as that is the best way to detect the leak, and for future reference NEVER NEVER NEVER use that stop leak crap in anything - Transmission, Oil, Radiator, A/C, etc... That crap ends up causing more issues down the road then you are having now as it can gum up the lines or clog the condensor or evap.