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Cadillac DeVille Climate Control

57 messages,  Last post on Sep 27, 2009 at 12:42 AM

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What is this discussion about? Cadillac DeVille, Heating / Cooling, Sedan

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#15 of 57 98 Cad deville airconditioning problem by dewainet Jun 25, 2007 (4:56 pm)
Have a 1998 Caddy Deville with 115,000 miles. Had water hose replaced and mechanic forgot to refill radiator. Car overheated. Topped with coolant and car sat for about 6 months. Went to turn on heater after sitting for six months only to have extremely cold air blowing. After about 10 minutes of blowing cold air, message center says refrigerant low, airconditioner turning off. Seems the heater core unit was inoperable and was pulling the freon from system. Now both the A/C and Heater don't work. Had the car in to the mechanic 3 times and they keep trying to replace A/C seals. Does the heater core and A/C operate off the same system. Right now I just want the darn A/C to work!!! Replies to this message: zimzam1 (Jun 27, 2007 2:34 pm)
#16 of 57 Re: 98 Cad deville airconditioning problem [dewainet] by zimzam1 Jun 27, 2007 (2:34 pm)
Replying to: dewainet (Jun 25, 2007 4:56 pm) dewainet, I am not sure about the heater core and A/C working off the same system but it seems like you have an incompetant mechanic. I will tell you one thing though, if he forgot to put in radiator fluid, it also sounds like he didnt put in the pellets that are supposed to go in with the radiator fluid that prevent the coolant from getting to hot. That is what happened to me, well my mechanic did refill the radiator he just didnt add the pellets, so now I have to deal with a blown headgasket. So make sure when they are refilling your coolant system that they look into those pellets which can be picked up at any cadillac dealership.
#17 of 57 R.D by bullnibler Jul 30, 2007 (4:06 pm)
I have a 1996 sedan deville. ive replaced the a/c compressor,and dryer,and its worked fine for about a month. Yesterday the ac quit working. I noticed the climate control wont go on auto... it stays on econ, the fan works fine and will go on auto. Could this be a problem with the control? I have checked and the 134 is fine although i cant turn the compressor on by bypassing the low pressure cut-out switch. Replies to this message: bolivar (Jul 30, 2007 5:00 pm) bullnibler (Aug 01, 2007 2:27 pm) bolivar (Aug 01, 2007 8:40 pm) and 1 more...
#18 of 57 Re: R.D [bullnibler] by bolivar Jul 30, 2007 (5:00 pm)
Replying to: bullnibler (Jul 30, 2007 4:06 pm) When the high or low pressure control switches sense an out-of-range condition, the AC system will not turn on, it will only operate in the ECON mode, which is non-AC.   There should be an error code set in the system which will tell you what problem the sensors are seeing.   There are other places on the internet which will tell you how to put the dash display into error reporting mode, and show you all errors that have been set.   Overall, your AC has broken again. Replies to this message: bullnibler (Aug 01, 2007 2:27 pm) bolivar (Aug 01, 2007 8:40 pm) KarenS (Aug 02, 2007 6:58 am)
#19 of 57 Re: R.D [bolivar] by bullnibler Aug 01, 2007 (2:27 pm)
Replying to: bolivar (Jul 30, 2007 5:00 pm) Thanks for the reply, any recomendations for a website to check?? Replies to this message: bolivar (Aug 01, 2007 8:40 pm) KarenS (Aug 02, 2007 6:58 am)
#20 of 57 Re: R.D [bullnibler] by bolivar Aug 01, 2007 (8:40 pm)
Replying to: bullnibler (Aug 01, 2007 2:27 pm) I can't post a link to other sites on here.   I've already been slapped silly over this.   It's aganist Edmunds' rules to post links to competing sites.   Google is your friend. Replies to this message: KarenS (Aug 02, 2007 6:58 am)
#21 of 57 Re: R.D [bolivar] by KarenS HOST Aug 02, 2007 (6:58 am)
Replying to: bolivar (Aug 01, 2007 8:40 pm) Actually, we've lightened up considerably on that rule. As long as the link is going specifically to the requested information, we're fine with that. It's the generic, random "go here and join" links to other forums that are frowned upon. Email me if you have any further questions.
#22 of 57 Climate control stuck on (econ) by bullnibler Aug 02, 2007 (3:28 pm)
Where can i find code definitions for the air conditioning on my 96 sedan deville(AC1347). Ive gotten some really good help on here, from one person i think, and im very greatfull for that but i dont want to be a pain. Thanks again. Dale Replies to this message: bolivar (Aug 02, 2007 5:56 pm)
#23 of 57 Re: Climate control stuck on (econ) [bullnibler] by bolivar Aug 02, 2007 (5:56 pm)
Replying to: bullnibler (Aug 02, 2007 3:28 pm) http://myweb.accessus.net/~090/resources-cad.html   There is a Maintenance, On-board Diagnoistis, and Reference link. I'm about 100% sure your 1996 will be covered here for instruction about how to put it into diagnoistic mode, and a section telling what the codes mean.
#24 of 57 bullnibler by bullnibler Aug 03, 2007 (11:28 am)
I dont know who you are but thanks bolivar, i really appreciate all your help

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