who928

My 01 vert. It seems i'm getting cool air out of passenger side only and hot air out of drivers side with air condition on. any easy fix or dealer ? thanks Joe

Vetteman Jack

Moved to C5 Tech.

mrlmd

Possibly low on freon.

who928

checked for codes , no codes have cold air on pass side warm air on driver side. It has a duel system

grassblaster

hijacking. I too have a ac issue. it gets cold for a bit but think it freezes up. can i buy a can of coolant and do it myself? or is this something for a service shop?

mrlmd

There are no codes for "low on freon".

mrlmd

I meant that post for the thread starter, sorry if you thought it was for you.
With no codes, - It's just so much easier to check the freon first and refill if necessary than to start to rip up the dash looking for something else, or getting ripped off at the dealership..

who928

will check freon

SoCalSteve

I have the same problem, with a twist. At idle, after warm-up, air conditioner blows warm to hot air on driver side, very cold (depending on setting) on passenger side. Problem is complex with multiple failures contributing to trouble with diagnosis. Steps taken to date on my 2003 Z06:

1. Entire new AC system installed: compressor, dryer, and other components. This to correct original failure of entire AC (both sides).
2. After about 6 months, this hot on driver / cold on passenger side issue started NO CODES.
3. Diagnosis showed low on Freon (equivalent - can't remember its name). System recharged and actuators reset. System 'seemed' OK for short while.
a) dark fluid in drip pan seemed to be power steering fluid.
b) power steering leak found and fixed
c) power steering leak/ fluid color masked Freon leak. Couldn't see the colored dye due to PS fluid
4. 'Freon' recharged (again). Again, system seemed OK, but it didn't last.
5. Found faulty gasket from new AC install. Repaired (warranty), refilled Freon, no leaks.
6. IMMEDIATELY, hot driver / cold passenger problem persisted
7. Reset actuators again 3 times. Symptom during reset: flaps move to full hot no problem. You can feel the full hot air. Then flaps move to full cold. At this moment, get warm air from drivers, cold air from passenger
8. During 2.5 hour drive home, experienced FULL COLD air from both sides when at freeway speed. Held my hand in front of passenger and driver outlets and it felt the same. Still no codes!?
9. When in stop and go slow traffic, got warm to hot air from driver side, while passenger remained cold?????

So, it seems that I have no problem at speed, but have the hot driver side during stop and go?! We are stumped. Any ideas welcome!

Thanks

pjensen

Sounds like the a/c compressor install was done poorly - not testing for leaks.

I replaced my a/c system this suumer. Ran into several problems with leaks. The o-rings that came with the condenser were the wrong size. Also had issues with o-ring at the evaporator. I used a nitrogen bottle to pressure the a/c system to 100 psi and see if it held that pressure for several hours. Then I used a vacuum pump for 5+ hours to get the system down to 750 microns (using a gauge to monitor it). Then I put in R134a refrigerant to break the vacuum.

I went through several different o-rings before I got the right one that did not leak. If your mechanic didn't do this checking, no wonder you have a massive leak.

Simtech

This could just be the blend doors. A quick and simple thing to do is disconnect the battery for a few minutes then hook it back up and start the car. Do not adjust the temp setting for several minutes while the blend doors calibrate them selves. I had a Tahoe that the blend door actuator were going out on and this would fix it for a while but I eventually had to replace them. Good Luck