Blend door actuator?

Tiny
JORDAN HOGE
  • MEMBER
  • 2014 JEEP GRAND CHEROKEE
  • 3.6L
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 45,000 MILES
When I start my vehicle to let it warm up the heater blows hot air and it blows it like it should on high, but when I drive down the highway for about twenty to thirty miles and go to turn the fan up, it barely pushes any air out. I can hear it blowing under the passenger dashboard, but there is barely any air coming out of the vents. It does not have a problem heating. It only happens when I am driving down the highway for a ways. I have cleaned the in cab filter but have not tried anything else. When I pull the filter out and turn the fan up it blows air out of the filter a lot good, but when I put it back together it still does not push any air out of the vents, does not work on floor, front vents, defrost, and also does not work on recirculate.
Sunday, December 11th, 2016 AT 4:51 AM

30 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 50,348 POSTS
Hey JORDAN,

It sounds like you have a blend door actuator that is not working right. Here is a guide and diagram on what you should check and/or replace.

https://www.2carpros.com/articles/replace-blend-door-motor

Please let us know what you find so it will help others.

Best, Ken
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Monday, December 12th, 2016 AT 3:53 PM
Tiny
JPAUL333
  • MEMBER
  • 4 POSTS
  • 2011 JEEP GRAND CHEROKEE
  • 120,000 MILES
I was in the process of replacing the driver side blend door actuator gear on my vehicle listed above today, when the adjacent gear it aligns with, fell off and got lost. So now I’m looking to find the part name and number for that item so I can purchase and replace. Please see the attached photo for reference.
Please help!
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Wednesday, December 9th, 2020 AT 3:43 PM (Merged)
Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
Hello, I'm Danny.

Can you try again to upload the picture? It didn't show up. Get back to us and we'll go from there. Thanks for using 2CarPros.
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Wednesday, December 9th, 2020 AT 3:43 PM (Merged)
Tiny
JPAUL333
  • MEMBER
  • 4 POSTS
Sure thing! Please let me know if you can see the photo now.
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Wednesday, December 9th, 2020 AT 3:43 PM (Merged)
Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
Hello again.

Since you used your cell phone to take that picture is there any way you can magnify the screen shot by blowing it up by hand to get those part numbers? I looked on my repair guides but the gear is covered by the actuator and doesn't show a name or any numbers. I've attached a picture below and circled in red. Let me know if this looks like the plastic gear. Hope you might have found it or can blow up your photo. Keep us updated as soon as you can. Hope this helps and thanks again for using 2CarPros.

Danny-
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Wednesday, December 9th, 2020 AT 3:43 PM (Merged)
Tiny
JPAUL333
  • MEMBER
  • 4 POSTS
Hi Danny,

The part you have circled looks like it. Here is the zoomed in image I found online.
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Wednesday, December 9th, 2020 AT 3:43 PM (Merged)
Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
Hello again.

You might have to buy a housing. There are 3 different versions so I will need the last 8 digits of your VIN number to find out. Get back to me and we'll go from there. Thanks again for using 2CarPros.

Danny-
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Wednesday, December 9th, 2020 AT 3:43 PM (Merged)
Tiny
JPAUL333
  • MEMBER
  • 4 POSTS
BC632165.
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Wednesday, December 9th, 2020 AT 3:43 PM (Merged)
Tiny
STEVE620
  • MEMBER
  • 66 POSTS
  • 2010 JEEP GRAND CHEROKEE
  • V8
  • 4WD
  • AUTOMATIC
  • 75,000 MILES
Installed new blend door actuator on passenger side. Still makes a banging sound. It seems that the gear is off. It there a way to align it?
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Wednesday, December 9th, 2020 AT 3:43 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

Can you post a video of the noise for me?

Roy
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Wednesday, December 9th, 2020 AT 3:43 PM (Merged)
Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
Hello again.
I've tried finding this for you with not much luck. I was told there are only 2 items able to be purchased being the gear itself and the actuator. I've attached pictures below available for purchase from local Jeep dealers. Your best bet might to be to take your phone with that picture on it to your local Jeep dealer parts department and see what they can do for you. Hope this helps and thanks again for using 2CarPros.
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Wednesday, December 9th, 2020 AT 3:43 PM (Merged)
Tiny
STEVE620
  • MEMBER
  • 66 POSTS
Thank you for responding, it sounds like to me the Blend door. I did recheck the gear, there are no teeth missing.
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Wednesday, December 9th, 2020 AT 3:43 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Okay, it does sound like the actuator.

Can you feel it when you put your hand on it?

https://www.2carpros.com/articles/replace-blend-door-motor

The teeth do not have to be bad for it to tick. The gears can just jump.

Roy
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Wednesday, December 9th, 2020 AT 3:43 PM (Merged)
Tiny
STEVE620
  • MEMBER
  • 66 POSTS
Yes I can feel it jumping. I can also see the gear jumping against the teeth on the door. I can move the door by hand so I know that is not stuck. When I installed it, it went on with know problem.
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Wednesday, December 9th, 2020 AT 3:43 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
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Replace the actuator. It is the actuator itself.

Roy
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Wednesday, December 9th, 2020 AT 3:43 PM (Merged)
Tiny
STEVE620
  • MEMBER
  • 66 POSTS
That was the first thing I did, and the second one does the same thing.
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Wednesday, December 9th, 2020 AT 3:43 PM (Merged)
Tiny
ASEMASTER6371
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What brand are you using?

You could remove the cover and pack the gears with grease. That will stop the gears from jumping.

Roy
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Wednesday, December 9th, 2020 AT 3:43 PM (Merged)
Tiny
STEVE620
  • MEMBER
  • 66 POSTS
I just opened up the old one and I can see where the gear is all chewed up. I will remove new one from car and remove case tomorrow. Thank you, will let you know what I find.
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Wednesday, December 9th, 2020 AT 3:43 PM (Merged)
Tiny
ASEMASTER6371
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  • 52,797 POSTS
Yep, that is common.

Keep us updated.

Roy
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Wednesday, December 9th, 2020 AT 3:43 PM (Merged)
Tiny
STEVE620
  • MEMBER
  • 66 POSTS
When installing new one should I have the blend door opened or closed?
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Wednesday, December 9th, 2020 AT 3:43 PM (Merged)

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