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1 Answer

Heater won t turn off


I would guess the mixture door is stuck, allowing heat to always be mixed with the air.

May 14, 2013 | Cadillac DeVille Cars & Trucks

1 Answer

Heater won't turn off. Error message on display panel says "c". Heater blowing on High.


Disconnect neg / grnd battery cable. Replace Heater Blower Resistor. This will allow the heater blower to operate correctly

Mar 03, 2013 | 1989 Cadillac Sedan DeVille

2 Answers

Replaced heater core, car won't start need troubleshooting


If you changed your heater core, it has nothing to do with the car starting. Did you disconnect the battery when you did this? . The only other thing I can think of is a safety switch that won't allow the car to run if the water is low. This can happen if the system gets air locked. How did you fill the system back up? Did you hit any wires off while working on car? Did the car run fine before you changed the heater core? Let me know and we can go from there Cheers from NS Canada

Jan 14, 2013 | 2000 Audi A4

1 Answer

1993 buick park avenue heater won,t work.checked all fuses an relays


i beleive you did more than that.? you,ll probably find all have a common earth , chech and remove it , clean with a wire brush and replace, also chance the fuse you removed and replacer reguardless of it,s appearence , ensure its put back in the correct location,peter.

Sep 03, 2012 | 1993 Buick Park Avenue

1 Answer

I have a 1999 cadillac catera the heater is not heating but the fans work also the air works great


there is a actuator that opens the vent door at the heater core box that is bad, when its closed it allows cold air 2 pass when its open it allows hot air 2 pass. Its behind the radio next 2 the glove box . The actuator is very hard 2 replace but you can access it from the passenger side floor area with some work and disconnect it so you can tie the door open , otherwise your gonna need 2 take out the dash. I would recommend taking it 2 the dealer but that wont be cheap

Nov 21, 2011 | 1999 Cadillac Catera

1 Answer

Heater not getting hot but blower is working


Without more information, I can tell you that you have a problem with your heater core. Check coolant levels and make sure you aren't low on coolant. If that isn't an issue, make sure your heater core isn't bypassed. In Texas, I see them bypassed instead of repaired because it hardly ever gets cold here. You could also have a dirty heater core that isn't allowing the heat transfer. The only other thing it could be is an issue with the temperature blend door/actuator. If it isn't opening properly to allow the warm air from the heater core to enter the ventilation system, you won't get hot air.

Nov 04, 2011 | Cars & Trucks

1 Answer

No in car heating,blowers working fine but it wont produce heat. Its a 51 plate grand cherokee Thanks


If it won't produce heat then you have an issue with your heater core. The heater core could be bypassed, in which case no hot coolant will get to it to produce heat inside the cabin. The heater core could be stopped up with dirt/debris, in which case the heater core can't radiate heat to produce heat in the cabin. The ducting in the dash could not be allowing the hot air to flow to the vents - therefore no heat in the cabin. I'd start with the heater core and check to see if it is bypassed. This generally happens on older vehicles because the parts can be harder to find.

Nov 01, 2011 | 2001 Jeep Grand Cherokee

1 Answer

I have steam coming out of my defroster & it smells like antifreeze without the defroster or heater even being on. What could this be? I am unable to see to drive because of a film that covers the...


yOUR HEATER CORE NEEDS TO BE REPLACED. ANTIFREEZE CONTINUALLY RUNS THROUGH YOUR HEATER CORE WITH OR WITHOUT THE HEAT OR AC BEING ON. THIS ALLOWS YOUR ANTI-FREEZE TO COOL ABIT WHEN IT RETURNS TO THE BLOCK.

Oct 15, 2011 | 1997 Pontiac Bonneville

3 Answers

The heater/ac fan only works on speed settings 4 & 5


you might check your switch sounds like to me that your two lower speed sides of the switch maybe burnwed out.

Dec 19, 2009 | 2002 Chevrolet TrailBlazer

1 Answer

Heater won,t blow warm . core ok. fan runs .will only blow cold


EITHER VALVE STUCK TO ALLOW WATER IN MATRIX OR YOU HAVE AIR BLOCK IN IT. TAKE OFF TOP HOSE AND RUN MOTOR, TOP UP RAD AT SAME TIME, USED A DESCALANT IF WATER MUDDY /RUSTY LOOKING

Feb 02, 2009 | 1997 Dodge Neon

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