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Unread 10-02-2013, 07:55 PM   #1
Icetheman
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2004 WJ 
 
Join Date: Jun 2010
Location: San Jose, CA
Posts: 18
Help with Diagnosis, Blender Door Issue?

Hello,

I have been trying to diagnose a problem with my 2004 WJ's air conditioner. The AC works on the driver side however it will blow almost no air on the passenger side when the AC is on. Also, I will blast the AC but it seems like the temperature in the car never really changes even though I can feel the cold air shooting directly at me.

When I switch to the heater, it will work on both sides and there are not any problems warming the vehicle up. I am thinking this may be a blender door issue in that the door on the right is stuck letting only heat in. Does this sound like a plausible diagnosis?

Thanks!

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Unread 10-06-2013, 01:59 PM   #2
Icetheman
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2004 WJ 
 
Join Date: Jun 2010
Location: San Jose, CA
Posts: 18
So I replaced both blend doors and observed both of them working. When I turn the temp to cold both doors go down and when its set to hot they are both up. I also put it to 75 or so and watched both doors be in the middle.

I am having the same problem though, I can feel heat on both sides of the vehicle but when I turn the AC on and turn the temp to cold I only feel cold air from the driver side. The passenger side is just room temp air.

I am also now getting codes 54 and 47 but this does not make sense being that I am observing the driver side actuator moving and having no problems.

Anyone have any ideas?

Thanks
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Unread 10-06-2013, 03:52 PM   #3
rdkendrick
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2003 WJ 
 
Join Date: Jan 2013
Location: Cincinnati, Ohio
Posts: 3,134
Quote:
Originally Posted by Icetheman View Post
So I replaced both blend doors and observed both of them working. When I turn the temp to cold both doors go down and when its set to hot they are both up. I also put it to 75 or so and watched both doors be in the middle. I am having the same problem though, I can feel heat on both sides of the vehicle but when I turn the AC on and turn the temp to cold I only feel cold air from the driver side. The passenger side is just room temp air. I am also now getting codes 54 and 47 but this does not make sense being that I am observing the driver side actuator moving and having no problems. Anyone have any ideas? Thanks
You might try the calibration, found on wjjeeps.com. If that doesn't do it, you'll either need to pull the dash off, or switch to the single blend door, because the passenger side motor is not accessible from the glove box. I hope the calibration works for you.

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Unread 10-06-2013, 04:22 PM   #4
Icetheman
Registered User
2004 WJ 
 
Join Date: Jun 2010
Location: San Jose, CA
Posts: 18
Thanks. I just re-calibrated the system, however this did not fix anything. The cold air from the drivers side really does not get that cold. I am wondering if this issue could be caused due to the pressure being low in the system?

I do not think its the passenger blender motor because I could see the passenger side blend door working just the same as the drivers side when I replaced them.
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Unread 10-06-2013, 06:59 PM   #5
Icetheman
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2004 WJ 
 
Join Date: Jun 2010
Location: San Jose, CA
Posts: 18
Charged the system some and that fixed the issue. Both sides now blow cold.

Guess I changed the blender doors for no reason.
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Unread 10-06-2013, 08:48 PM   #6
rdkendrick
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2003 WJ 
 
Join Date: Jan 2013
Location: Cincinnati, Ohio
Posts: 3,134
Quote:
Originally Posted by Icetheman View Post
Charged the system some and that fixed the issue. Both sides now blow cold. Guess I changed the blender doors for no reason.
Well, I guess you won't have to worry about those for several years now. Glad you got it fixed!

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