A/C, drivers side hot....
Thread Starter
Racer
Joined: May 2004
Posts: 290
Likes: 0
From: LV NV
A/C, drivers side hot....
Cant figure this out, my drivers side a/c is not getting cold, ambient temp. at best, the pass. side is nice and cold working like normal, all of the fan settings work, and lights on the a/c unit are all working properly, but just the drivers side dosent get cold at all, I've obviously got the dual climate control, and checked all the ground wires/plugs under the hood along with fuses and swapped the a/c relay w/the horn relay, none of that made a difference... my car has been sitting outside for about a month with not alot of use, so there has been no recent modifications that could have caused this... any ideals out there would be a big help... 
Racer
Joined: May 2009
Posts: 263
Likes: 1
From: Andover KS
It is most likely low on freon. I chased this problem for a week till someone on here told me it was that. It seems that the freon enters the evaporator on the pass side first and if it is too low on freon the drivers side of the evaporator never gets very cool before the coolant returns to the compressor. I have a leak on my low side valve so every so often it gets warm on the drivers side when the freon level gets too low and the pass side stays cool. I recently put a fuel injector O-ring in the plastic cap and it seems to have stopped my leak for now. Hate to dump the freon just for a few dollar valve replacement right now and its band aid fixed at the moment. Anyway, its low on freon most likely. Get one of those tall cans with the gauge and the hose and throw it in there if it reads toward the low side. Then after its all in, put your finger over the valve with the plastic cap off and see if it is leaking there. Also check the high side one forward of that one. I've heard it is pretty common for those crappy little schrader valves to leak on GM cars.
Last edited by Blown427conv; Aug 15, 2009 at 11:26 AM.
Thread Starter
Racer
Joined: May 2004
Posts: 290
Likes: 0
From: LV NV
seems it was a loose connection on the bottom of the high pressure port, not sure what that plug is for but as soon as I touched it a radiator fan came on, then the drivers side started to get cold, appears to be working now, thanks for the input....
Tech Contributor
Joined: Jan 2007
Posts: 19,475
Likes: 1,171
From: Dyer, IN
If you have a supercharger mounted in the same location as me, the high pressure sensor connector is very close to the supercharger, and easily damaged. If you just touched the connector, and things started working, including the fan running like it should, it suggest that something is loose in the connector, or the wiring is damaged. I would inspect closely, or it will surely happen again.
