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2003 Jeep Laredo Airflow from vents

Tiny
CARPROSHADOW
  • MEMBER
  • 2003 JEEP GRAND CHEROKEE LAREDO
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 111,000 MILES
When I step on the gas to accelerate, airflow stops coming out of the panel vents and comes totally out of the defog vent underneath the front windshield. When I let off the gas and take the load off the engine, the airflow switches back to the panel vents. This is without changing the airflow selector switch.
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Saturday, August 29th, 2009 AT 3:36 AM

1 Reply

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
System operate on vacuum
and if vacuum to be lost system will and should default to defrost
check under hood vacuum source and vacuum lines
for leak or loose


https://www.2carpros.com/forum/automotive_pictures/99387_Graphic1_482.jpg




https://www.2carpros.com/forum/automotive_pictures/99387_Graphic2_222.jpg



https://www.2carpros.com/forum/automotive_pictures/99387_Graphic2_237.jpg

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Saturday, August 29th, 2009 AT 5:21 AM

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