Question about 1998 Jeep Grand Cherokee

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I have a 2005 Grand Cherokee and the heater/ac fan runs intermittenly unless it is on the highest setting. How do you change out the fan motor? I can't determine how to get to the motor to change it.

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  • poi242 Dec 29, 2008

    I have the exact same problem and would greatly appreciate any help in fixing this issue.

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  • 133 Answers

You might look into the fan resistor before replacing the fan itself

Posted on Jan 10, 2009

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Heater/air conditioner fan only works when on highest setting


Hi there:
At wires going into heater controller in dash check to see if brown/tan wire has voltage with switch in high position. If not replace controller. If it does splice in a new wire between controller and blower motor.





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Why would my 2002 Jeep Grand Cherokee only blow luke-warm to cold air when the fan is on high? First the heat went on the highest setting, so i used the second highest. Then it started to coll as...


Sounds like you need a blower motor resistor located down under dash on pass side next to blower motor. This is a comon problem and I have changed many of them. thats just the fan speed problem. Ive seen the blend doors break easily on those jeeps. thats inside the heaer core box and moves the flap from hot air to cold air. If it is stuck halfway -or mostly to cold- you may only get luke warm air. If they had the heater core out-maybe they possibly broke it.

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Heat/AC Blower fan speed only works on High


Alot of people have the same problem with the fan switch and blown bulbs. There really is no fix for this. Jeep really screwed up when designing the heater control assembly. The cheapest solution is to buy another unit off Ebay. Can always go to the dealer but be ready to PAY for there mistakes.

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1 Answer

2005 jeep grand cherokee 4.7 Ac fan lost the 3 lower settings, only the high setting still worked. For a while the lower fan settings would just come on, and then go out again. The high fan setting...


Well, the blower resistor handles the lower speeds and the hi-blower relay handles the hi speed only. if the fan still works on the lower speeds then the resistor is bad. if the fan doesn't work at all then your motor has failed and or burn't the relay out also. if you can get your blower to start by hitting the kick panel above the pass. side foot area then the motor is bad. if you are handy enough to drop the kick panel and access the motor then check the connections at the motor. Then wack the motor and see if it comes on then. you will most likely find the problem if you follow those simple rules above. Good luck.

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