Question about 1997 Jeep Grand Cherokee

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2000 Jeep Grand Cherokee Limited - heater/ac blower motor comes back on after you turn off the ignition. Sometimes it will only come on for less than a minute, sometime it will kill the battery.

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Replace the blower motor relay, it is defective and sticking internally, causing the heater motor to keep running.

Posted on Dec 08, 2010

  • 1 more comment 
  • redbelt20524 Dec 25, 2010

    If it was the relay why does it function normally whe car is running but comes on again on high speed 30 seconds after shutting car off

  • GetMeOttaHere Dec 25, 2010

    Because a relay (it is a switch) when defective will do some unusual things and is the easiest thing to swap out in the PDC. If the relay is known to NOT be the cause, then a more detailed approach will be needed to isolate this unusual circuit issue, and will require a volt meter to test voltages with the vehicle on and off as well as other circuits. Making this happen in full detail on the posting is not an easy task.

  • Eric Pilli
    Eric Pilli Aug 04, 2018

    I know This post was 8 years ago but I'm curious to see if you ever found where that really was is I need to find it in my truck?

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Posted on Jan 02, 2017

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Fa goes off when ac on thn comes back onwhat may be wrong 1999 jeep grand Cherokee


Check for melted wires or connector at the blower resistor. It's located near the blower motor which is under the dash above where the passenger's feet go.

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I own a 2001 Jeep Grand Cherokee Limited. It has about 75,000 miles. Recently on a long trip, the blower for heat simply went out. I turned it off, and 20 cold minutes later tried it again, it worked. For...


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