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Unread 12-18-2011, 02:40 PM   #1
bjm9818
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Heat/AC Blower works just no air?

Blower works but I get no air in Heat or AC mode any setting??

I had the blend doors replaced a few years ago.

I followed the AZC Blower Motor controler repair instructions from WJJeeps after I found my terminals melted. I ordered what I thought was the correct part but it looks a lot different?? The metal back part (that extends into the duct) prongs are almost two inches long vs. 1/2" max on the old part.

The Heat/AC and fan control works just seems a gate isn't opening somewhere?? No air either side/def/AC/Heat/circulate but fan is blowing.

Either I got the wrong Blower Motor controler part or a gate is stuck and won't open?

Anybody else have this issue when replacing the controler

'03 Overland

Thanks

Brian

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Unread 12-18-2011, 09:59 PM   #2
bjm9818
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Just found it's pulling a error code 52 and 54. Anybody??
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Unread 12-20-2011, 08:16 AM   #3
amremt408
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I'm having what sounds like the exact same issue... I replaced the same unit you did (those longer metal prongs are heat sinks I believe, designed to keep that part cooler, to avoid melting it up again). I can hear the blower motor kick on and it varies speed accordingly, but the air from the vent does not change accordingly...

I have an '04 overland with the dual climate control.

I was thinking that I maybe reversed the polarity when installing the new mopar part, but I don't think that's the case... Need help, any ideas?
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Unread 12-20-2011, 08:16 AM   #4
amremt408
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Quote:
Originally Posted by bjm9818
Just found it's pulling a error code 52 and 54. Anybody??
What do those codes mean?
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5.9 ZJ... 4.5" Rubicon Express short arms. Bridgetone REVO 2's... 265/75/16.

2004 WJ... OME HD coils, Bilsteins shocks, JKS adj track bar, MOOG SS, ADDCO rear sway bar with ext., Bridgestone REVO 265/70/17.
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Unread 12-20-2011, 08:19 AM   #5
MudPit
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52 is a re-circ door code. The re-circ door regulates whether the air coming into the system is external air or internal air. This door suffers from the same design flaw as the blend doors and you need to make sure that you don't have problems or just the blend door fix won't help.

54 is the most common code indicating a broken driver's side blend door. The door is on a horizontal axis and when it breaks, it typically falls to the bottom of the box, blocking the heater core, giving no heat and lower efficiency AC.
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Unread 12-20-2011, 09:21 AM   #6
amremt408
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Would one or either of these codes explain the lack of high flow through my vents?

looks like I need to get a code reader to see what codes pop up for my system...
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Unread 12-20-2011, 09:43 AM   #7
BigRedKM
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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.
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Unread 12-20-2011, 10:16 AM   #8
bjm9818
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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.
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Unread 12-20-2011, 11:29 AM   #9
amremt408
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My cruise control isn't working... Maybe I have a vacuum leak... Interesting. Anybody have any advice as far as a code reader? Anyone use one of the ones from harbor freight?
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5.9 ZJ... 4.5" Rubicon Express short arms. Bridgetone REVO 2's... 265/75/16.

2004 WJ... OME HD coils, Bilsteins shocks, JKS adj track bar, MOOG SS, ADDCO rear sway bar with ext., Bridgestone REVO 265/70/17.
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Unread 12-20-2011, 11:50 AM   #10
alfaitalia
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Quote:
Originally Posted by MudPit View Post
52 is a re-circ door code. The re-circ door regulates whether the air coming into the system is external air or internal air. This door suffers from the same design flaw as the blend doors and you need to make sure that you don't have problems or just the blend door fix won't help.

54 is the most common code indicating a broken driver's side blend door. The door is on a horizontal axis and when it breaks, it typically falls to the bottom of the box, blocking the heater core, giving no heat and lower efficiency AC.


Code 52 is recirc door but it usually snaps completely off its hinge and falls across the blower blocking most of the flow. happens to me , sounds like its happened to th op.

Code 54. Heater core is not on the bottom of the box its to one side so when when the doors break off the cannot block the heater core just the outlets to one side or the other (or both) of the car.
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Unread 12-20-2011, 01:31 PM   #11
amremt408
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That is good information... How do I check to find what codes my jeep is showing? Do I need an OBD code reader? Or is there a self diagnostic feature?
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5.9 ZJ... 4.5" Rubicon Express short arms. Bridgetone REVO 2's... 265/75/16.

2004 WJ... OME HD coils, Bilsteins shocks, JKS adj track bar, MOOG SS, ADDCO rear sway bar with ext., Bridgestone REVO 265/70/17.
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Unread 12-20-2011, 06:21 PM   #12
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Unread 12-21-2011, 01:57 AM   #13
amremt408
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I have codes 54 & 56... Left and right temperature door travel too large.

How do I fix this?
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5.9 ZJ... 4.5" Rubicon Express short arms. Bridgetone REVO 2's... 265/75/16.

2004 WJ... OME HD coils, Bilsteins shocks, JKS adj track bar, MOOG SS, ADDCO rear sway bar with ext., Bridgestone REVO 265/70/17.
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Unread 12-21-2011, 02:14 PM   #14
bjm9818
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I just tried to solder the pins back on the old controller last night but it was to beat up to work.

Today I just gave up trying to find out what is wrong and dropped it off at PepBoys a few hours ago. I figure for $35 it will be worth having them figure it out for me.
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Unread 12-21-2011, 07:12 PM   #15
BigRedKM
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Please let is know how it goes. But they will probably just tell you your muffler bearings are going bad. Their *******s.
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