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Unread 07-10-2013, 04:40 PM   #31
rdkendrick
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2003 WJ 
 
Join Date: Jan 2013
Location: Cincinnati, Ohio
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Quote:
Originally Posted by BigRedKM View Post
Im having the exact same problem. Some say if your cruise control doesn't work then its because you have a vaccum leak. But mine works but just no air. I switched the polarity on the plug also but it still had no effect. I also reset the azc system via the fuse and still no luck. My next plan is to take out the motor and see if anything is blocking the passage.
If you have an AZC system, it is electronically controlled, not vacuum. Did you do a search for blend doors? Someone else complained when I gave a link for www.blendorstore.com but I never had a problem with them and it helped me understand everything. Also, heatertreater.com, etc.

SORRY, DIDN'T LOOK AT THE DATES.


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Unread 07-10-2013, 04:42 PM   #32
rdkendrick
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Quote:
Originally Posted by bjm9818 View Post
My issue was I replaced the motor controller 8 mOnths ago and installed the redesigned part. The fan worked but as I stated above no air came out. I even ordered s new controller and same thing. My only option was to use the old controller with the new harness plugged into the three pins sticking up from the board and put it back that way.

It has worked fine since then but last week one of the pubs broke off the board so that's when I decided to try the new part. I even went to the dealership yesterday to see if there was a different part but he came up with the same thing.

My blend doors and Recirculator door were replaced a few years ago so I'm pretty sure that's not the issue.
If you are pulling error codes 52& 54, you definitely have blend door problems. i believe those errors mean door travel too large, which means the blend door is not moving.

SORRY, DIDN'T LOOK AT THE DATES

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Unread 07-10-2013, 04:49 PM   #33
rdkendrick
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Quote:
Originally Posted by MelRock View Post
Any updates on the fix for this? I am having the same problem. I can change from heat to cool, I can hear the fan running but not a whole lot of air coming through the vents up top.
I am working on a 2003 Jeep Grand Cherokee.
Did you put the new blower resistor kit on it? If so, from what other posters have said, the new kit has a heat sink with prongs that are longer than the original. If you have that, reverse the black and red wires. It will make the fan run faster. See recent threads concerning this.

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Unread 07-11-2013, 08:36 AM   #34
MelRock
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Quote:
Originally Posted by rdkendrick View Post
Did you put the new blower resistor kit on it? If so, from what other posters have said, the new kit has a heat sink with prongs that are longer than the original. If you have that, reverse the black and red wires. It will make the fan run faster. See recent threads concerning this.

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Yes I did put the new resistor kit on and that is when the air stopped flowing full speed through the vent.
Thank you and I will give that a try today.
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Unread 07-12-2013, 08:14 PM   #35
MelRock
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Quote:
Originally Posted by rdkendrick View Post
Did you put the new blower resistor kit on it? If so, from what other posters have said, the new kit has a heat sink with prongs that are longer than the original. If you have that, reverse the black and red wires. It will make the fan run faster. See recent threads concerning this.

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Thanks again and that did get the fan blowing more air. My problem now is that the motor will not turn off. Any help anyone can give me would be appreciated.
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Unread 07-15-2013, 09:25 PM   #36
rdkendrick
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Quote:
Originally Posted by MelRock View Post

Thanks again and that did get the fan blowing more air. My problem now is that the motor will not turn off. Any help anyone can give me would be appreciated.
Did Narnwv help you any? I was watching a YouTube video:
YouTube (Short URL)
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and was thinking it could be your relay.

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Unread 07-16-2013, 03:43 PM   #37
MelRock
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Quote:
Originally Posted by rdkendrick View Post
Did Narnwv help you any? I was watching a YouTube video: and was thinking it could be your relay.

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I found out the problem. I was switching the wrong motor wires or should I say the wires on the wrong side of the resistor. Everyone talked about the red and black wires and the only red and black wires I had went back to the battery. The wires that went back to the motor are green and black on my resistor. I switched those out and it works perfect now.
Thanks for your help!!
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