Question about 2004 Chevrolet Cavalier

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Air conditioner works but air comes out of defroster not the vents

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  • Anonymous Aug 01, 2008

    no cold air when AC turned on

  • Anonymous Aug 01, 2008

    no cold air when AC on ?

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1 Answer

Slection switch or cable broken

Posted on Sep 28, 2008

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I ONLY HAVE A/C AIR coming from the defrost vents


if you are trying to see if the heater and the defroster works, and only the air conditioner works I would check to see if you have a blown heater blower motor. it might be a fuse but could be more.

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There is a deflector vent door actuator motor that is not working,the dash will have to be removed to replace it.

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Check to see if the duct hose to the defroster vents has come loose. If air is blowing out under the dash when you have the control set to defrost, then this is likely.

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Air comes out of the defroster and floor vents but not the air co


under the hood on the firewall there is a square boxlike cover beside the maxifuse&relay. there is a vacucum hose there that controls the vent shutoff had same problem with my 93 bonneville sse when purchased, check to see it has no cracks or has pulled out of rubber connecter .

Mar 24, 2009 | 1997 Pontiac Bonneville

1 Answer

Air conditioner problems


You have a vacuum leak.Defrost is the default postion no vacuum.
Find the small black supply line under the hood on the passenger side where it goes thru the fire wall,trace it back you should see a plastic canister then from there it goes to a vacuum port on the intake.Should find a leak somewhere in this line.

Feb 19, 2009 | 2001 Ford Expedition

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

1 Answer

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Many cars use air conditioning as part of the defrost function. Cold air will clear windshield faster than hot air.

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1 Answer

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I have had ductwork under the dash come undone and cause this-depending on your vehicle, the ducting to your face/feet vents may snap into place. Also the switch that directs the air may not be working, or just not directing to those vents for some reason. Take a quick look underneath and see if you can see anything obvious. Sometimes a vent has just come undone from the rest of the system and needs to be popped back on.

Jun 10, 2008 | 2000 Ford Explorer

4 Answers

Air conditioning and heating


The vacuum line on the drivers side of the intake manifold just below the throttle body fell off.

May 26, 2008 | 2003 Jeep Grand Cherokee

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