Automotive Air Conditioning Information Forum (Archives)

Provided by www.ACkits.com

We've updated our forums!
Click here to visit the new forum

Archive Home

Search Auto AC Forum Archives

2005 Caddy SRX much colder on right side

infj23 on Tue October 02, 2012 11:37 PM User is offline

Year: 2005
Make: Caddy
Model: SRX
Engine Size: V6

2005 Caddy SRX
V6
107K Miles

Except that the A/C is much colder on the right side (dash vents blow about 15 degrees colder), the system seems to be working well. I get heat when I want heat, but when it is warm out, the AC is too cold to stand on the right side. Later in the day, when the sun is less direct, a fog appears on outside of the windshield, just about the defrost vents--right side only.

My suspicion is a blend door problem. There is a sound, and irregular rubbing kind of sound, that appears to come from the behind the center of the dash. My uneducated guess is this is a blend door trying to do something but not able to do it. The sound is audible with key-on-engine-on as well as key-on-engine-off. I recorded the sound it makes; you can hear it HERE.

I checked my alldatadiy subscription for guidance. My car apparently has four Actuators: Mode, Recirc, Air Temp-Left, and Air Temp-Right. Any good guesses out there, assuming I'm on the right track of which of these I should check first? Or, am I completely off base?

Thanks to all!
Doc

GM Tech on Wed October 03, 2012 8:43 AM User is offline

You suspect blend door-- I suspect charge level,,,,65% of a/c failures are due to loss of refrigerant-- so I play the numbers....about 2 % are due to blend doors....Have the refrigerant pulled out and weighed and you'll know for sure- then if you get the right amount out- go for your blend door theory...

Refrigerant boils off on side of evap that feed passenger side first- then there is nothing left for driver's side- if you could feel evap- passenger side would be cold- driver's side warm--due to half or less of necessary refrigerant charge in system-- give yourself another 6 months and you' complain of no cooling either side- you are seeing the initial symptoms of a leak-

if you determine charge level is low- then find and fix your leak.....

-------------------------
The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

ezautoac on Thu October 04, 2012 10:39 PM User is offline

+1 and checking refrigerant level is sooo much easier than checking the blend door!

Back to Automotive Air Conditioning Forum

We've updated our forums!
Click here to visit the new forum

Archive Home

Copyright © 2016 Arizona Mobile Air Inc.