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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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#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
#33 of 57 A/C not working at all from one day to another by 92bonny Jul 31, 2008 (11:31 am)
Hi guys, I have a 1979 Coupe DeVille with a 425 (carb) in pretty mint condition. Love the car and drive it as much as I possibly can (even with gas prices the way they are). Recently though it's just been sitting in the garage because the days have been too and the A/C stopped working. When I turn the lever from "ON" to "AC" or even heat all I hear is a hissing sound, the blower motor will not turn on and neither will the compressor. I already checked the blower motor and it works, the compressor is a another story I can't figure out how to check if that works. I checked the fuse and that was also good.   I need some help, summer has come and it seems to be going pretty quickly and I want to be able to drive it before winter hits because then the car gets stored away until next summer.   Anyone got any ideas what I might be able to check for?   Thanks,   Al Replies to this message: eddieking1957 (Aug 24, 2008 6:05 pm)
#34 of 57 2002 deville climate control by siamakzadeh Aug 03, 2008 (2:03 am)
I have problems with the climate control in my 2002 Deville. everything worked well untill last week when tempreture hit around 100 degrees. Since then, when i get into my car and start the car the digital display works fine and shows the fan on auto. But the fan doesnot work. sometime i drive about two blocks and it will kickin and sometime it does not come on at all for a day. Is there a possible quick fix for it? Please
#35 of 57 1970 deville climate control by deraeanderson Aug 04, 2008 (11:57 am)
I have a 70 deville convertible. My ac blows cold but my heat does not work seems like the vents are not switching because ac just stays on, Any suggestions would be greatly appreciated
#36 of 57 2002 Deville Blower Motor by duckwing1 Aug 17, 2008 (7:44 pm)
I have seen this problem a couple of times on this site without answers posted. The HAC blower will quit for a couple of days. Often when I hit a bump, it will start up and work fine until it decides to quit again. What might the cause be?   Thanks -- Jim Replies to this message: siamakzadeh (Aug 18, 2008 12:45 am) duckwing1 (Aug 18, 2008 4:59 am)

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