Moms cherokee needs help 2006 Jeep cherokee - JeepForum.com

 
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post #1 of 7 Old 07-09-2013, 08:20 AM Thread Starter
sethhawk1
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Moms cherokee needs help 2006 Jeep cherokee

My moons 06 grand cherokee is having an intermittent AC problem. All I know is that the blower motor well with in the mornings and more the afternoons/evenings or when hot. She lives 4 hours away so I haven't been able to touch the vehicle but she is coming down in a few days and I would like to get it fixed for her.

Please don't let mom down. Jk

Is this the blower motor?

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post #2 of 7 Old 07-09-2013, 10:12 AM
tom19511
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Dont understand your question... It works then doesn't???

Tom
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post #3 of 7 Old 07-09-2013, 10:18 AM
jaysix
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It may just need the system recharged?
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post #4 of 7 Old 07-09-2013, 10:57 AM Thread Starter
sethhawk1
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I'm sorry damn Android Swype. The blower intermittently doesn't work. In the mornings it will work but in the evenings/afternoons it won't work. Also when its hot it won't work.

Its not a recharge issue cause the blower itself isn't blowing.
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post #5 of 7 Old 07-09-2013, 12:03 PM
tom19511
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Maybe blower motor resistor.. Search the forum for replacemnt procedure.. easy fix..

Tom
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2006 G.C.65th Anniv. Edition
2007 Liberty Sport 3.7
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post #6 of 7 Old 07-11-2013, 01:37 PM
JeepCares
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I know the problem is intermittent and I don't know if this info will be useful or not. Just disregard if it's not. It's from the service manual.

BLOWER MOTOR OPERATION
The blower motor is used to control the velocity of air moving through the HVAC housing by spinning the blower wheel within the HVAC air inlet housing at the selected speed or, in the ATC system, at the selected or programmed speed.

On models equipped with the manual temperature control (MTC) heating-A/C system, the blower motor will operate whenever the ignition switch is in the On position and the blower motor control in any position except Off. On models equipped with the automatic temperature control (ATC) system, the blower motor will operate whenever the ignition switch is in the On position and the A/C-heater control power is turned on.

For the MTC system, blower motor speed is controlled by directing the ground path for the blower motor through the correct resistor wire to obtain the selected speed.

For the ATC system, blower motor speed is controlled by the blower motor power module which provides the blower motor with power and a path to ground. The blower motor power module also sends a blower control signal to the A/C-heater control. Using input from the blower motor control (manual mode) or sensor data (automatic mode), the A/C-heater control processes the blower control signal from the power module and sets the speed at which the blower motor will run.

The blower motor and blower wheel are factory balanced and cannot be adjusted or repaired and must be replaced as an assembly if found inoperative or damaged.

OPERATION
Possible causes of an inoperative blower motor include:

Open fuse
Inoperative blower motor resistor or power module (depending on application)
Inoperative blower motor switch
Inoperative mode control switch
Inoperative blower motor
Inoperative blower motor circuit wiring or wire harness connectors
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post #7 of 7 Old 07-11-2013, 01:54 PM Thread Starter
sethhawk1
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Thank you
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