Question about 2002 Jeep Grand Cherokee

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2002 jeep grand cherokee limited. no air comes out of the vents or defrosters on any setting. just stopped all of the sudden, the fan motor comes on all speeds an i hear the vents change when i change from vent to defroster to floor so its working, very very little air comes out. on the passenger floor to the left of the blower motor, there the vent housing, one side gets very hot the other side about an inch away is freezing? Any help?

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

SOURCE: Air Vents

I had the same problem and read through different forms and when I went under the hood - the vacuum line actually disconnected - put it back on and everything works great - thanks so much for your help

Posted on Jul 26, 2008

freetek
  • 5568 Answers

SOURCE: air coming out the vents

The flow direction is accomplished with vanes that are dependent on engine vacuum to operate. You may have a hose off or cracked so the vanes are not answering to the settings you choose. 

Posted on Sep 15, 2008

  • 548 Answers

SOURCE: 2001 Grand Cherokee blower goes to defrost under acceleration

You have a vacuum leak. Look under the dash and check the placement of the vacuum hoses that activate the vent doors. One or more may have slipped or may be cracked.

Posted on Dec 28, 2008

Mikey108
  • 475 Answers

SOURCE: 03 jeep grand cherokee...htr vent

This is a vacuum problem. Look under the hood while the car is running and listen for a hissing sound. There could be a vacuum line that came off by the passenger side firewall.

Posted on Dec 29, 2008

BCally1
  • 133 Answers

SOURCE: 03 jeep grand cherokee...htr vent

probably a bad mode door or mode door motor

Posted on Jan 10, 2009

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