Question about 1992 Cadillac DeVille

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The climate fan will not blow in the heat mode /does blow in cool mode 1992 cad. deville

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Your problem is most likely a fault of the AC/Heater programmer; this devices located on the passengers side, under the dash just below the glove box. Make sure that your heater hoses going in thru the firewall at hot to the touch and that the heater core is not plugged up.

Keep us updated.

Posted on Jan 03, 2011


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Cooling fan runs all time

If you mean all the time when the ignition is on, this may be correct, depending on how you have the climate controls set. Anytime you have the climate control in an A/C mode, or whenever the defroster is on (look for the squiggly lines icon on the control), the A/C compressor runs and thus so will the cooling fan. To be sure, place the climate control in the heat mode with the air directed to the floor vents, As long as the engine is at normal temp, then cooling fan should be off in this condition.

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What make the air blow heat when you stop

Lots of things...

First the lack of outside air coming across the condenser. Also you may have an electrical fan that does not work or a mechanical one that does work properly. You could also have a problem with your cooling system (radiator is low) and the heat from that system is transferring to the very nearby condenser for your ac system.

Or the most common problem is likely to simply be low refrigerant or Freon if you prefer that term.

good luck

Jul 28, 2012 | 1992 Cadillac DeVille

1 Answer

My Cadillac is making a "knocking" sound underneath (by the muffler). What causes that and is it expensive to repair. Also, the Caddy has "climate control" a/c. It doesnt blow air like other cars a/c. Is...

I'm not sure about the knocking sound, unless there is a piece inside the exhaust that has become dislodged and is bouncing around when the car is running.

As far as the A/C a common problem is to have a low charge on the A/C system of refrigerant which causes the air to seem less cold when blowing. There is no way to change the fan except by pushing the buttons to increase the speed electronically on the climate control fan. It can go as high as 'hi' fan if you press the button for that.

Jul 01, 2010 | 1992 Cadillac DeVille

1 Answer

The air condition blow out cool air but stop in 3 second, low fan, the switch seen to work ok the inside switch, the freeon was put in to days ago the pump is turning but hi persure is not activating to...

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1 Answer

'96 cadillac deville has no air.cond./heat

Unfortunately for you ( i had the same problem) The A/C compressor HAS to be in working order on these cars or else all heck breaks out with the climate control.

If it's a nice car, get a new compressor installed. If it's borderline- get rid of the car.

I paid 2200 to Cadillac to fix the A/C and climate control only to have the transmission fail in my '93.

I dumped the car soon thereafter....

May 27, 2009 | 1996 Cadillac DeVille

1 Answer

Cooling fan relay on a 1992 Cadillac Deville

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1 Answer

Heat not blowing 92 cadillac deville

check you fan, or door controls under dash,

Dec 13, 2008 | 1992 Cadillac DeVille

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