tuckman_21 Posted September 5, 2006 Report Share Posted September 5, 2006 I have a 2002 DTS (Best car i ever owned) But the air conditioning in the back seat seems to alway blow hot air no matter what temp you set it on. And when I turn the floor air on in the front seat it seems to blow cool for a few minutes and then goes warm. I don't suppose anyone has an easy fix for this issue??? Link to comment Share on other sites More sharing options...
BodybyFisher Posted September 5, 2006 Report Share Posted September 5, 2006 Have you checked the on board computer to see if any codes are set? If you don't know how to check them see this link: http://www.caddyinfo.com/readingcodes.html Report the codes here and we will be able to help you or you can look them up here: http://myweb.accessus.net/~090/dtcobd2.html Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
tuckman_21 Posted September 5, 2006 Author Report Share Posted September 5, 2006 Ok thanks for the reply, learn something new every day i guess. I went out and checked that and the code I found that pertains to that is B0429 "Temp control #3 Rear Circuit Range/Performance ??? Not a lot of help to me but maybe you all can assist with that? My next question now is what does history mean when you look up the codes should I not worry about them or are they still an issue? Link to comment Share on other sites More sharing options...
Ranger Posted September 5, 2006 Report Share Posted September 5, 2006 Sounds like your problem lies in the rear tempurature controler. Most DTC's will go from current to history if the fault has not been dtected in the last 3 ignition cycles. It will remaiin in history til cleared or 50 ignition cycles without a fault detected, then it will be cleared. Link to comment Share on other sites More sharing options...
Cadillac Jim Posted September 5, 2006 Report Share Posted September 5, 2006 A code that is "History" may well be important for diagnosing an ongoing problem. A code goes from "Current" to "History" when the problem isn't being caused at that particular time. The B0429 will likely read as "Current" if the rear A/C is on and running, and the temperature isn't correct. If you turn off the rear A/C or check the codes with the key on and the engine and A/C not running, it will read as a "History" code. -- Click Here for CaddyInfo page on "How To" Read Your OBD Codes-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data -- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC Yes, I was Jims_97_ETC before I changed cars. Link to comment Share on other sites More sharing options...
Astrak Posted September 6, 2006 Report Share Posted September 6, 2006 Not absolutely positive but this could be blend motor problem and the control for heat to cool is stuck or the motor no longer functions. Link to comment Share on other sites More sharing options...
tuckman_21 Posted September 6, 2006 Author Report Share Posted September 6, 2006 any idea where I might find the blend control motor? Link to comment Share on other sites More sharing options...
Astrak Posted September 6, 2006 Report Share Posted September 6, 2006 I have no idea you would need to get a factory service manual. Or maybe someone on this site knows. Link to comment Share on other sites More sharing options...
JimD Posted September 6, 2006 Report Share Posted September 6, 2006 This might not be the easy fix you hope for but it's worth trying before you dig into the HVAC plumbing under the dash. Clear the codes. Slowly rotate the master temperature dial from 60 to 90 several times. Also toggle the passenger side temperature from full red to full blue several times. Toggle the MODE selector through all the positions. Take your time. There are 4 stepper motor type actuators in the HVAC duct work; 3 of them are identical and plug compatible which makes trouble shooting (swapping parts) a tad easier. The 3 that are the same are Recirculation Actuator, Air Temperature Actuator, and Mode Actuator. The one that is 'different' is the assembly that contains two stepper motors for the Right Air Temperatur Actuator and the Auxiliary Air Temperature Actuator (as in rear seat). Jim Drive your car. Use your cell phone. CHOOSE ONE ! Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.