Last post on May 16, 2013 at 6:14 AM
You are in the Cadillac DeVille
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Cadillac DeVille, Heating / Cooling, Sedan
#43 of 88 Re: Owners Manual [eddieking1957]
Sep 01, 2008 (8:01 pm)
Ebay is your friend.
#44 of 88 2004 DeVille Climate Control Issues
Sep 25, 2008 (5:12 pm)
My 2004 DeVille has two issues: 1) The blower will turn on hours after the car has been parked. This is an intermittent problem, but it drives me crazy. Issue 2, the AC smells sour when I first turn it on. The dealer has cleaned it out repeatedly with a foaming solution but with no results. I've changed the cabin air filter numerous times, sprayed Lysol, etc. I believe the system is plugged-up and water is just sitting there. Anyone out there experieced in these area? I live in Richmond, VA. Thank you.
#45 of 88 Re: 2004 DeVille Climate Control Issues [wozierski]
Sep 26, 2008 (12:56 am)
On older Cadillacs, a few years older than yours, there are known failures where the blower usually just keeps blowing after the car is shut down. This is usually the blower control/controller unit, which, I think, sits on top of the AC/Heater exchanger unit under the passenger side of the dash. This is the 'box' that controls the auto temp control. Yours is the first time I've hear about the blower goes off when the car is shut down, but comes on some time later.
Ok, read in your owners manual closely about the Heater/AC system. I think there is a section that talks about how the blower will continue to correctly run after shutdown, under certain conditions. But I think it runs only for a couple of minutes or so in this mode. I don't know what these conditions are, but they are an attempt to 'dry out' the system, or some such thing. If you system is supposed to do this, then maybe it is working correctly.
In humid weather, with the AC running, with the car idling and stopped, does water come out of the bottom of the car? Normally, you should get condensation on the AC coil inside the car when running in hot humid weather, and this water comes out of a drain outside the car. If you car does not do this, then the drain is plugged. But, if you have had service done for the smell, they surely should have checked this.
If you get mode growing in the AC coil, it can be very difficult to 'kill' it. This may be what is happening to your car.
#46 of 88 Re: 2004 DeVille Climate Control Issues [bolivar]
Sep 27, 2008 (11:14 am)
Thank you for your comments. I will look into this and post my findings.
#47 of 88 Re: Broken temp gauge and heater is blowing cool air [jknight8787]
Dec 08, 2008 (10:44 pm)
I have the same car with the same problem. Did replacing the outside temperature sensor solve the problem?
#48 of 88 2000 Deville - A/C and Heat work but Middle Blowers won't blow???
Dec 26, 2008 (2:09 pm)
#49 of 88 2000 Deville - A/C and Heat work but Middle Blowers won't blow???
Dec 26, 2008 (2:09 pm)
My feet and the top of my head are cold but I am getting NO air coming out of the middle vents; it also DOES blow in the back seat. When I first start the car the sound that comes out of the middle vents is "tick, tick, tick, etc" for about 4 minutes then nothing... help???
#50 of 88 89 DeVille Blower module
May 09, 2009 (6:43 am)
Just a note, my blower stopped working. I did the required testing and blower motor replacement was the outcome. Before I bought a new motor I bench tested the motor and it worked fine. The blower control module was the problem. Recommended voltage tests did not reveal problem, so beware before you buy.
#51 of 88 auto/econ not working
Jun 06, 2009 (1:35 pm)
Hey, My 96 deville has an issue. When you press the auto/econ button to get it to switch to auto, it will not. It goes right back to econ. This problem seems like it happened over night. Can anyone give us a tip. Thanks in advance.
#52 of 88 Re: auto/econ not working [tripled1]
Jun 07, 2009 (1:49 am)
Econ means the AC compressor is switched off.
Auto means the AC system is switched on.
You have a problem with the AC. One of the high or low pressure sensors detects a problem, and will not let the Auto mode be set.
Fix the AC.