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  #13  
Old 01-27-2014, 11:58 PM
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Re: Blower vent control question

Hi!

Sorry! I updated my post on several other forums but never updated it here...

Here's the update:

SO sorry everyone for the delay!

After the shop having my Liberty for 3 days (and each day saying they would have it ready for me that night) it's fixed!!

Like I mentioned in my last post, they first replaced a vent motor or something, and that didn't do the trick.
Then the switch panel and that didn't work either...
They FINALLY dove in for the full HVAC BOX replacement. The service manager handling it was GREAT and was totally on my side and stuck with me through this whole thing.
Apparently the 1st repair of the vent motor was never supposed to happen - he wanted the HVAC BOX done RIGHT AWAY, but there was a miscommunication and they wrote up the order for just the small repair.

Anyways, they pulled the dash and then noticed that the NEW HVAC BOX was defective - had a seam that wasn't sealed and would end up leaking air)
He said he would never install something like that cuz it could end up causing me issues later, so they ordered ANOTHER box...end DAY 1.

Now the 2nd day they went to install the SECOND HVAC BOX and noticed that there was a foam gasket of some sort that didn't come with it, so they had to order THAT. They got it the same day, and after installing everything they somehow broke the video feed to my front license plate cam. I was peaved, especially when they said they had snipped off the broken video plug at the LockPick end and put a new connector on and it still didn't work. They claimed to have tried reversing the +/- on the plug like I asked, but it still didn't work.

They wanted to replace the whole cable run to the front. I told then it had taken me 2 hours to get it just the way I wanted it, and he assured me that they had done Lockpicks and cams before (strange that a Jeep dealer would install something that overrides some features of the MyGig, but cool I guess)

So, DAY 3 was spent getting the cam working and detailing my Jeep inside and out (it's like new again! er, well at least on the inside - the outside only lasted 1 Minnesota slush-filled drive)

SO, to sum it up, when he pulled the ORIGINAL HVAC BOX out, he noticed that there was like a 1/4" play in the blend door that fed the defrost. He told me to tell you all that when your dealer checks the blend door function via the computer interface (wow! My iPhone OBD-II app can't do that - had no idea something as simple as that could be "read" through the OBD) they will APPEAR to be functioning 100%, but it doesn't read any play in the doors.
He said the force of the air would push the loose door out of the way and the air would leak out the defrost.

SO - it works WAY better now! There is a small amount of air coming out the defrost when set to 12:00, but there is now a DEFINATE difference between 12:00 and 1:00. The "paper test" doesn't lift the paper now more than 1/2" where before it went right to the windshield.

Don't give up! I personally think the Jeep HVAC boxes have an inherent problem with blend door play, so who knows if there will be a recall someday.

-Greg
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  #14  
Old 02-04-2014, 08:51 PM
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Re: Blower vent control question

Checked mine today and it's doing the same thing. Looks like I'll be making an appointment to bring it in.
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  #15  
Old 02-05-2014, 03:32 PM
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Re: Blower vent control question

So is mine. Never noticed it before.

Oh well. It's gonna stay like that because 1. I don't care and 2. I'm not paying for it.
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Old 02-05-2014, 04:56 PM
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Re: Blower vent control question

Quote:
Originally Posted by Marlon_JB2 View Post
So is mine. Never noticed it before.

Oh well. It's gonna stay like that because 1. I don't care and 2. I'm not paying for it.
Should be covered under Manufacturers warranty if you not over the mileage limit.
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Old 02-06-2014, 08:39 AM
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Re: Blower vent control question

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Originally Posted by DarkSport11 View Post
Should be covered under Manufacturers warranty if you not over the mileage limit.
Uh huh.

It's 2014. I have a 2010. So regardless of my 84,300 miles, it still wouldn't be covered.

I never actually use that setting so that might be why I don't care. In my Jeep, it works just fine otherwise.
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Old 01-21-2015, 11:25 AM
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Re: Blower vent control question

I am so thankful to have found this information. Its been driving me crazy. I was hoping to just be a vacuum leak but I guess they have done away with that. This will probably be the last winter for this Jeep for me so I'll just deal with it. Thanks again as this has saved me time and money!!
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Old 01-21-2015, 12:22 PM
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Re: Blower vent control question

Glad the info was useful for you!

I know how great it is when you finally come across info about something that you were beginning to think you were alone in dealing with

My defrost vent is "leaking" a little more air than it was right after the repair, but it's still way better than it was before.

It still bugs me that ANY air comes out the defrost vents when you have it set on FLOOR only. My wife is constantly complaining about the warm air hitting her in the face when she just wants it on her feet - guess it's just a poor design choice by Jeep, or maybe an inherent defect in a large number of HVAC boxes.
The only other way to deal with it is to set the dial at FRONT and FEET which TOTALLY cuts off the air to the DEFROST...and then you can manually close the front vents to try and cut off the air from those.

-Greg
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Old 01-30-2015, 12:41 AM
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Re: Blower vent control question

We have a 2008 Liberty Limited. Noticed the heat /AC distribution knob didn't change air flow and had to replace the heater vent/distribution system under the dashboard. Was about $800.00 all in. Very unhappy about that BUT that has been the only screw up on a 2008 so far. Highlight was going for a joyride after 18-19 inch snowfall when no one else would dare go out in the streets.
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Old 01-30-2015, 07:04 AM
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Re: Blower vent control question

First it was the rear gate latch always saying it was open and leaving the dome lights on and also setting off the panic alarm that is now disconnected which means it wont lock. Then I noticed the headlights have a slight flicker. And now the heat that warms the windshield but not your feet. But it will go through anything! Hopefully the Grand Cherokee will be a better experience.
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