Question about 1992 Chevrolet Camaro

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Defroster work front heater dont open

Defroster blowes front dash don't blow air out

Posted by Anonymous on

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 20 Answers

SOURCE: Heat wont blow through heater or defroster vents

common problem, check under dash by the gas pedal if control arms are muving went selecting from ac to heat cuz this it is the control for the vents to go from ac to heat and to defrost.

Posted on Feb 23, 2009

  • 16 Answers

SOURCE: No air blowing from the dash vents

sounds like you have a vacuum problem

Posted on May 04, 2009

  • 192 Answers

SOURCE: air conditioner blows hot air from dash

On most cars when you push a button or slide a lever to change your choice of location where you want the air to blow out louvers move inside the dash to redirect the air to your chosen location. When you switch from heat to AC other louvers move. These louvers are often powered by vacuum lines running from the engine. If one of these louvers is stuck or if you have a vacuum leak in one of the lines it may be causing your problem.

Posted on May 12, 2009

morse008
  • 1111 Answers

SOURCE: 1996 chevy blazer my air on heater will not blow

the idea of the switch is run on vacuum and is not making contact with the switch it self either worn contacts in the switch itself **** as an obstruction as well or the vent door is stuck in just that position either behind the glove box or the ash tray are the vacuum lines one of them may be pinched off or the door needs a bit of help until you can free it up

Posted on Sep 08, 2009

  • 3 Answers

SOURCE: Heat wont blow through heater or defroster vents

Had the same problem. believe it or not i changed the gas cap and got heat all around. something about pressure.

Posted on Dec 07, 2011

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2 Answers

A/C will only blow through defrost vents


Common question on this site. On late model cars, the vents are controlled by blend door motors. Small electric motors open and close doors to direct air flow.
Chances are you have a blend door that is stuck or a failed motor.
The default position is the defrost to make sure the windshield is always clear.
Someone will need to look behind the dash to see if all of the doors will move on demand.

Jun 27, 2012 | 2006 Acura TSX

1 Answer

2000 grand am se heater problem in the dash as described as being the actuator? motor comes up to temp,not overheating-blower motor works on all seting but as if temp switch on dash dont work. ---answers...


There are little doors under the dash that direct the air to either the vents (blows at your face), the defrost (blows at the windshield), or underneath (blow to your feet area) - these doors are controlled by what's called actuator/s and they are usually controlled by vacuum or cables - when the air won't change directions it can be either the vacuum switch, the vacuum line disconnected, cable disconnected or the actuator itself can be stuck or bad...

You also have a heater valve that allows the heated coolant to enter the passenger compartment into a heater core (small radiator to allow heat to transfer into the air when the blower blows air across the core) - this can also be vacuum controlled or cable controlled or electronically controlled - if it malfunctions then you may not get any heat into the passenger compartment - you will have to determine if the valve is not getting the signal to open or is bad and will not open - good luck :O)

Feb 17, 2011 | 2000 Pontiac Grand Am GT

1 Answer

My 2006 jeep Liberty Front Defrost blows cold air. When I turn on the heat every vent blow hot air, except the front defrost and it blows cool air...any suggestions?


Sounds like defrost door on heater box is not work You need to get under dash and check controls on the box. Good luck

Dec 08, 2010 | 2006 Jeep Liberty

1 Answer

Heater does not blow hot air ----The heater started to make a loud clicking noise about a week ago when i turned it to defrost but would not blow hot air it does blow air in the defrost vents and will...


thats the blend door a $65 peice that a ford dealer will charge $345 to fix/install its in a bad location and maybe too hard to fix yourself the whole dashboard has to be removed

Oct 31, 2009 | 2003 Ford Explorer

1 Answer

Defrost not working well, amount of air blowing is low. Acts like a blockage problem, all other parts of the heater system works fine.


While in defrost mode press and engage a/c button on dash(leave in hot air position) and see if that helps with defrost issue. What this does is with a/c operating it removes moisture from the air in car which is all fogged windows are is humidity build up.Dont worry cold air wont blow through vents even though a/c on due to position of hot/cold adjuster.

Oct 24, 2009 | 1998 Honda Accord

2 Answers

When i have the heater/defroster on the heater below blows cold air while the defrost blows hot. when i switch to just defrost the bottom heater stays on and blows cold air. when i have front dash and...


It sounds like you have a blend air door stuck. This is in the housing of the heater a/c blower unit under the passenger side of the dash. There is a motor on the top of the housing that could possibly be stuck or on working.

May 10, 2009 | 2003 Dodge Durango

1 Answer

Defroster won't blow air


It sounds like the heater control panel is'nt opening the defroster door
under the dash. You need to check cables or vacuum lines under the dash to see if any came off the diaphrams or levers.

Feb 03, 2009 | 1995 Jeep Grand Cherokee

1 Answer

Heat wont blow through heater or defroster vents


common problem, check under dash by the gas pedal if control arms are muving went selecting from ac to heat cuz this it is the control for the vents to go from ac to heat and to defrost.

Jan 18, 2009 | 1997 Chevrolet K1500

2 Answers

Heat wont blow through heater or defroster vents


Had the same problem. believe it or not i changed the gas cap and got heat all around. something about pressure.

Dec 05, 2008 | 1993 Chevrolet Corsica

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