Question about 1994 Jeep Grand Cherokee

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Air wont blow out of the dash vents on my 94 jeep grand cherokee. I can change it from defrost to floor but thats it

Doesnt matter if its ac or heat

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  • Contributor
  • 17 Answers

You have a vacum line lose under the dash for the heater or the switch is dirty

Posted on Nov 21, 2013

  • Jason Reed
    Jason Reed Nov 21, 2013

    Thanks. It sat for 4 or 5 years so its possible

  • Gregory Kirkpatrick
    Gregory Kirkpatrick Aug 26, 2017

    Or it could be under the hood, poke around for a hose that fell off a nipple on the motor. That solved vent controls and cruise control on mine! (I know this post is outdated but for future readers.)

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  • 323 Answers

SOURCE: 2001 Jeep Cherokee a/c blows defroster only, no cruise control

There is a vacuum leak under the hood somewhere. Check the vacuum at the speed control servo. If there is no vacuum on the line with the engine running, follow the line to find the leak. The vacuum reservoir is mounted under the battery tray. I would look in that area after confirming no vacuum at the servo.

Posted on Apr 27, 2009

  • 2 Answers

SOURCE: 2006 Jeep Grand Cherokee Laredo ac not cooling

My 1999 limited does this. When i bought it off the guy he said that its because of some flap down by the passengers left foot. In mine the passenger air barely even blows because of this.

Posted on Jun 20, 2009

SQUIRESXX
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SOURCE: 2001 jeep grand cherokee wont blow air through vents

there is a flap to redirect the air flow under the dash, it may be an item like a pen :) that has dropped down the vent opening stopping it from moving to redirect the air ... failing that, one of the motors/cables that operate the flap has failed

Posted on Dec 05, 2009

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1 Answer

Why does My thermostat Not switch between ac,heat,defrost . there's cold air coming out of vents but not cold enough to be ac. Initially when this started the ac was blowing hot air


If the air flow cannot be controlled from vent/defrost/floor you may have a blend door issue. This is an electric motor that operates a door in the heating system to control airflow. There are usually 3 motors controlling airflow direction,heat and recirculation. The Ac not blowing cold may also be another problem. If the AC is operational, the compressor will be engaged and the Ac low pressure line under the hood will bw cold. If this is all ok then a blend door issue should be suspected

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the damper or flapper ibside the heater box is not moving. If they are vaccum actuated could be lack of vaccum or bad diafram in the actuator...replace

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2 Answers

2001 jeep grand cherokee wont blow air through vents


there is a flap to redirect the air flow under the dash, it may be an item like a pen :) that has dropped down the vent opening stopping it from moving to redirect the air ... failing that, one of the motors/cables that operate the flap has failed

Dec 05, 2009 | 2001 Jeep Grand Cherokee

1 Answer

2001 Jeep Cherokee a/c blows defroster only, no cruise control


There is a vacuum leak under the hood somewhere. Check the vacuum at the speed control servo. If there is no vacuum on the line with the engine running, follow the line to find the leak. The vacuum reservoir is mounted under the battery tray. I would look in that area after confirming no vacuum at the servo.

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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.

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Check the control cable that operates the diverter door in the heater box at both ends, to make sure that it operates the door when you move the control lever.

Jan 15, 2009 | 2000 Jeep Grand Cherokee

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