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
#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.
#53 of 88 95 caddy sedan deville AC trouble
Jun 07, 2009 (4:41 pm)
Like its anything new....but I am new to the car and when I got it yesterday you could feel cold air coming from the vents but NOT blowing....then on way home it said "refrigerant low.....ac compressor off" I am assuming that means it shuts the compressor OFF to keep it from being damaged?
also when you press on the fan speed selector...I get nothing.
I tried to add refrigerant but since the system wont kick on it wont cycle to get refrigerant flowing thru it.
HELP!!! Its HOT in AZ and I need this sytem to work as soon as possible.
The rest I can deal with and work on with some leisure...but the switch, the blower and the AC not working...is just frustrating me
thanks a million for help.
BTW...new here but real used to working on MOST cars but this is the first caddy I have ever had so any help be real appreciated
#54 of 88 Re: 95 caddy sedan deville AC trouble [korrupt1]
Jun 08, 2009 (12:55 am)
Yes, if the sensors see high/low pressure, it will not allow the compressor to turn on.
If you could find the places on the internet giving you instructions, you can display and reset the error codes from the buttons on the dash.
If you can't do this, you call pull the negative battery cable for a minute and this will reset the error codes. Then, have your freon hoses all hooked up before you restart the car, and you might be able to turn the AC system on and suck in enough freon before it resets the code. Might have to do this a couple of times to get enough freon in to stop setting the codes. Of course, this assumes you only have a leak and the rest of the AC system works ok.
No idea about the fan.
#55 of 88 93 caddy deville climate control and fuel data gauge show a "c" only on
Sep 02, 2009 (11:04 pm)
1993 cadillac devile 4.9 liter climate control and fuel data only shows a "c" on the displays. I've check the BCM, clusters, relays, fuses, temp. sensor, replaced alternator and still the same results. The blower moter runs until you turn the key to the off position. The continuous power to the interior when key is turned off no longer works meaning when I turn the key to the off position I loose all power in the car where it normally stays on for 10 minutes. Is there anyone out there who may have had this problem with their Cadillac and if so how did you solve this problem?
#56 of 88 help with fan problem in 98 cadillac deville
Sep 26, 2009 (8:51 am)
My 98 deville seems to have a mind of its own, it sometimes not always will start what appears to be the fan after the car has been shut off for 20-30 mins. It is random I never know when its going to happen. I always shut the air off fully before the care is turned off. funny thing is it sounds like the fan but when you get inside there is not air coming out of the vents. You have to put key in ignition turn it where all dash lights come on etc... then turn off and the fan goes off.
what is this??? its scary so far has only happened at home in my garage door is open every time but I wonder if it will happen in the parking lot at work or store whatever car only has 58K miles on it.
#57 of 88 Re: help with fan problem in 98 cadillac deville [miamifan]
Sep 27, 2009 (12:42 am)
There are a couple of possibilities, and I don't remember if either or neither are common to your 98.
-The connector that feeds power to the fan fails. It doesn't make good contact or something, overheats, and basically somewhat melts. This contact is under the hood, near the firewall, on the passenger side.
-On some years, the controller module that controls the fan speed fails in a certain way. When it fails, it will turn the fan on, even if the ignition is totally turned off. This module is inside, behind the glove compartment, on top of the air box.
#58 of 88 Re: 93 caddy deville climate control and fuel data gauge show a "c" only on [fveaces1]
Feb 18, 2010 (7:31 pm)
hi i have a 1990 caddy with the same problem fuel gauge shows a[c]and climate control shows a [c] hope you can help thanks peggy and keith
#59 of 88 Re: 93 caddy deville climate control and fuel data gauge show a "c" only on
Feb 22, 2010 (8:20 pm)
My relative has the exact same problem on a 1993 deville with 100000 miles. Anyone with sugestions where to start looking?
#60 of 88 Re: 2000 Deville - A/C and Heat work but Middle Blowers won't blow??? [vanhoogy]
May 30, 2010 (4:24 pm)
I have a 2001 Deville with this same problem; when I start the car with the A/C on there is this tick, tick, tick sound for about 30 seconds comming from the area just behind the HVAC control module and then the blower comes on and blows cold air on the floor, however no air comes out of the dashboard a/c vents.
After completely dismantleing the interior and removing the Instrument panel I've traced my problem to an actautor but cannot get it to make the tick, tick, tick sound again. I want to replace it but having trouble removing the old one and cannot find a parts store that carries the part. I'm afraid there is an electrical connector disconnected that is preventing me from getting it to make the ticking sound but if I put it all back together without replacing the actuator, bingo. Any sugesstions, when I connect enough connectors to get the blower to work it blows air out of the right vents.