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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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#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
#25 of 57 No air or heat - 1998 Concours by mdhug Aug 07, 2007 (3:53 pm)
Two days ago I turned the ac on to auto as normal It came on full blast (90 outside) and then the fan stopped. After 2 seconds it came right back on again. Well after leaving my office it did the same thing, except it did not come back on. The digital readout is fine, compressor operates normally, I just do not want to spend a bunch on different parts if I do not have to.   Thanks for the Help Replies to this message: bolivar (Aug 07, 2007 9:08 pm) jknight8787 (Nov 05, 2007 9:56 pm) sls002 (Nov 06, 2007 7:48 am) and 1 more... wwpeters (Dec 08, 2008 10:44 pm)
#26 of 57 Re: No air or heat - 1998 Concours [mdhug] by bolivar Aug 07, 2007 (9:08 pm)
Replying to: mdhug (Aug 07, 2007 3:53 pm) Wild guess - the 'temperature controller'. This is a box that manages the fan speed. Sometimes found inside, under passenger dash area.   Actually, I wouldn't throw parts at this problem. I would either take it to a dealer, or to a good private mechanic that says he knows Cadillacs. This might take some testing to actually find the problem. Replies to this message: jknight8787 (Nov 05, 2007 9:56 pm) sls002 (Nov 06, 2007 7:48 am) jknight8787 (Nov 06, 2007 8:07 pm) wwpeters (Dec 08, 2008 10:44 pm)
#27 of 57 Broken temp gauge and heater is blowing cool air by jknight8787 Nov 05, 2007 (9:56 pm)
Replying to: bolivar (Aug 07, 2007 9:08 pm) Hey All, I have a 99 deville concours, and the other day my digital outside temperature gauge went wack. It says its 118 degrees out when its really only about 50! Then i noticed that my heat isnt as warm as it used to be, and the passenger side vents are blowing cool air when i turn up the heat. If I set the temp to 90 degrees it is warm but from 80-85 it cool. Does the broken outside temp gauge have something to do with this. A mechanic told me they would need to run a diagnostics check for 87$ an hour! Any suggestions or help Please. Replies to this message: sls002 (Nov 06, 2007 7:48 am) jknight8787 (Nov 06, 2007 8:07 pm) wwpeters (Dec 08, 2008 10:44 pm)
#28 of 57 Re: Broken temp gauge and heater is blowing cool air [jknight8787] by sls002 Nov 06, 2007 (7:48 am)
Replying to: jknight8787 (Nov 05, 2007 9:56 pm) If your automatic climate control computer thinks that it is extremly hot outside, then it will try to cool the air coming into the car - so yes the broken outside temperature sensor will cause problems. Perhaps this will also affect the engine to some extent. You might ask them how many hours they need to run the diagnostics 87$ per hour. Replies to this message: jknight8787 (Nov 06, 2007 8:07 pm)
#29 of 57 Re: Broken temp gauge and heater is blowing cool air [sls002] by jknight8787 Nov 06, 2007 (8:07 pm)
Replying to: sls002 (Nov 06, 2007 7:48 am) Thanks for the info much. Im gonna try to get an estimate.
#30 of 57 Re: blower moter [millstream] by budcaruso Dec 06, 2007 (8:27 am)
Replying to: millstream (Jan 28, 2007 6:13 pm) Hello,   I also have a 2003 Deville since it was new. I am also having the same problem. Sometime the blower motor works sometime, not. It seemed for a while that if I hit a bad bump the fan would kick on! I have checked the fluids and fuses, all the easy fixes and they seem fine. When the fan does work everything works fine. I can adjust to all speed settings. The rear blower usually works but it also fails on occasion. I do get a bit of heat when moving just due to the air flow that exist in the system. I feel like a fool warming my car up in the morning with an electric baseboard heater! Thank God for the heated seats! I am an old school (pre-computer) car guy and I am completely lost on this one. Any HELP would be greatly appreciated. I am not really in a financial position for a big mechanical bill. I live near Chicago where the temp is 5 degrees today!   Thanks in advance,   Bud
#31 of 57 PROBLEMS WITH HEATER 91 cadillac deville by bernadette55 Dec 11, 2007 (9:24 pm)
I have had this problem before my climate control is not working, the heater stays on constantly, even when you cut the car off. I have to go under the hood to pull the plug for cut off, last year I had the same problem then it just start working one now when I need heat and defrost it does'nt work. Can some one please give me some help.
#32 of 57 Another Heater Problem by densvet Dec 31, 2007 (1:40 pm)
94 Concours, hardly even broke in at 73 K miles. Most systems seem to be working to some degree, but just recently the heater quit blowing warm air from the front dashboard vents. The fan runs strong, and "some" heat comes out of the defroster vents, but none will come out of the dash vents. The AC works well, out of the same vents, but just no heat from them Any help would be most appreciated   Thanks   Denny

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