A/C problem
Thread Starter
1st Gear
Joined: Jul 2018
Posts: 1
Likes: 0
A/C problem
Anyone had a problem with the A/C blowing warmer on one zone when both are set to the same temp? 2013
Driver zone blows warmer than passenger zone. As I said, both set to the same temp. Thanks...
Driver zone blows warmer than passenger zone. As I said, both set to the same temp. Thanks...
Melting Slicks
Joined: Jul 2016
Posts: 2,521
Likes: 219
From: Los Angeles CA
Usually an indication of a low charge, do not attempt to refill without gauges. You will likely over fill it.
Intermediate
Joined: Dec 2016
Posts: 30
Likes: 3
From: Tyler TX
Melting Slicks
Joined: Jul 2016
Posts: 2,521
Likes: 219
From: Los Angeles CA
Start mechanical first, check to see if the compressor runs comsistently, them the charge. Gm vehicles when low for whatever reason will blow colder on the passenger side when low.
Instructor
Joined: May 2011
Posts: 131
Likes: 3
From: NC
My 05 does it, I also hear a clicking sound behind the radio. I'm pretty sure my problem is the blend door actuator which I'm going to try to replace by myself. There is a comment and instructions on the forum about how to do it by going through the glove box and not having to remove the dash.
Drifting
Joined: May 2013
Posts: 1,515
Likes: 202
From: Mountain View California
Yes, on my 2012 same problem. Had a leak in the system, but eventually had to put in a new compressor. Only 63,000 mi on the car. Not
Burning Brakes
Joined: Sep 2004
Posts: 1,133
Likes: 20
From: Twisp WA
I'd guess low on freon or a sticky blend door in the duct system. But low freon is most likely the cause since a sticky blend door is only dispersing the air that the AC is producing. It doesn't produce two flavors, cool and semi cool, just directs what it gets to distribute throughout the cabin.
Compressor is possible but like above a bad or failing compressor most likely would not cool the passenger side more then the driver's side it would produce crap air for both sides. IMHO
Compressor is possible but like above a bad or failing compressor most likely would not cool the passenger side more then the driver's side it would produce crap air for both sides. IMHO
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Intermediate
Joined: Dec 2016
Posts: 30
Likes: 3
From: Tyler TX
Intermediate
Joined: Dec 2016
Posts: 30
Likes: 3
From: Tyler TX
My 05 does it, I also hear a clicking sound behind the radio. I'm pretty sure my problem is the blend door actuator which I'm going to try to replace by myself. There is a comment and instructions on the forum about how to do it by going through the glove box and not having to remove the dash.
Intermediate
Joined: Dec 2016
Posts: 30
Likes: 3
From: Tyler TX
The only time the driver side air gets cooler is when you go faster which says to me it is low on freon hopefully. But no, it is the same cool whether set at 60 or 70.
Burning Brakes
Joined: Sep 2014
Posts: 912
Likes: 52
From: Mech. pa
Could the belt be slipping? The temperature in the center duct should be 38 deg. with fan on high and both doors open. Some of the refill canisters have a gauge, some have a sealant, some have a dye to make leaks more visible.
Intermediate
Joined: Dec 2016
Posts: 30
Likes: 3
From: Tyler TX
Race Director
Joined: Oct 2005
Posts: 14,555
Likes: 1,255
From: Saint Albans, WV
It is a closed system, so charge=leak
Melting Slicks
Joined: Jul 2016
Posts: 2,521
Likes: 219
From: Los Angeles CA
Not always, sometimes a fluke temp change can result in a minor leak that seals back up. Sometimes service fittings can be rattled enough they bleed off a little, or the fitting start to dry out and that little amount on oil on them when hooking up gauges lubes them enough to seal.
Obviously if it does it again soon theres a major leak, but it's not always the case.
Obviously if it does it again soon theres a major leak, but it's not always the case.
Safety Car
Joined: Jan 2011
Posts: 4,959
Likes: 526
Not necessarily. Sometimes if the leaks a small one the stop leak agent that comes in the/some freon will do a pretty good job of sealing the leak. I've had them stop for just a year or so, and i've had them stop for as long as I owned the car.
Race Director
Joined: Oct 2005
Posts: 14,555
Likes: 1,255
From: Saint Albans, WV
Not always, sometimes a fluke temp change can result in a minor leak that seals back up. Sometimes service fittings can be rattled enough they bleed off a little, or the fitting start to dry out and that little amount on oil on them when hooking up gauges lubes them enough to seal.
Obviously if it does it again soon theres a major leak, but it's not always the case.
Obviously if it does it again soon theres a major leak, but it's not always the case.
Last edited by saplumr; Jul 26, 2018 at 01:06 PM.
Melting Slicks
Joined: Jul 2016
Posts: 2,521
Likes: 219
From: Los Angeles CA
I've had compressors that show proper pressures under vacuum and full charge but don't work because the comoressor design in a car allows back flow between the compressor shaft seals or slop in the veins.
A low system does not always mean it has a consistent leak. A high side switch that sticks, or a clutch that sticks can cause pressures to spike enough it bleeds past a seal, and lots of times that seal is fine.
Race Director
Joined: Oct 2005
Posts: 14,555
Likes: 1,255
From: Saint Albans, WV
Service a lot of auto systems? Building systems operate differently as they don't have varying RPM on the compressor like one driven by an engine, which is the reason why almost all cars now have high pressure switches where standing systems dont. Plus it's located in a hot engine bay, pressures bounce all over the place in a car. I've charged systems that were on the low side that never leaked again, or systems that had leaking service fittings that stopped leaking after hooking up the gauges simply because they got a little oil.
I've had compressors that show proper pressures under vacuum and full charge but don't work because the comoressor design in a car allows back flow between the compressor shaft seals or slop in the veins.
A low system does not always mean it has a consistent leak. A high side switch that sticks, or a clutch that sticks can cause pressures to spike enough it bleeds past a seal, and lots of times that seal is fine.
I've had compressors that show proper pressures under vacuum and full charge but don't work because the comoressor design in a car allows back flow between the compressor shaft seals or slop in the veins.
A low system does not always mean it has a consistent leak. A high side switch that sticks, or a clutch that sticks can cause pressures to spike enough it bleeds past a seal, and lots of times that seal is fine.