Question about 1999 Jeep Grand Cherokee

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1998 Grand Cherokee Limited vacuum operated heater flap problem.

My son just purchased a 1998 Grand Chreokee and the airconditioner will not blow out cold air. The airconditioning hoses are cold like they should be but the air is not cold coming into the vehicle. I think it may be the air/heat flap not working. Any hints as to how to repair this problem? Thanks.......Trent

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  • trent2 Jan 30, 2009

    Lady_Chaos: I only looked at the vacuum hose lines. I am not aware of how I can check to make sure the lines aren't leaking air. Pease advise me as to how this can be done. Thanks......Trent

    James: I have not cheched the fuses or relays. The fan motor blows hot air when the heater is on but when I turn on the aircondtioner it blows outside air temperature air. The airconditioning compressor is working. I thought the problem may be the "inside the dash" flap sticking. Your spelling is fine. Thanks for your help......Trent

  • Lady_Chaos
    Lady_Chaos May 11, 2010

    have you made sure you have no leaks in the lines as it comes into the firewall?



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Their are a few things that can make'the problum '' one is make sher that their are no fues blon''''or relays'''''2# check the wire that gos to the air pump make shur that it is not lossing cun-nc-tion like dert and grees '#3 make shur that the cluch is kiking in and out when you trun it on and off'''#4 have the system checked to make shur that the line is not clo-d''#5 have the or-fest in the line checked and have the system recudioned ''im sarry for my spelling ''is not all that grate'''hope this helps''''''my name is james e-mail is if you need to ask any more Q'''!!!

Posted on Jan 30, 2009

  • james wren
    james wren Jan 30, 2009

    i just sent a mesge i dont know if you got if '''let me know''' james



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