Blender Acuator replacement

Tiny
IAMTUROK
  • MEMBER
  • 2008 LINCOLN MKZ
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 98,000 MILES
I have been having a problem with my ac blowing cold from both driver side vents and just the center vent for the passanger. And in the afternoons in the heat the ac can randomly go from cold to straight heat. Is this a blender problem or multiple problems?
Tuesday, August 12th, 2025 AT 7:09 AM

9 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
If the heater is coming on this would be a blend door problem. Here is the location of the blend door actuator on the drivers side which it sounds like you are having the issue with. If I am wrong please let me know. Check out the images (below). Please let us know what happens.
Image (Click to make bigger)
Thumb
Was this
answer
helpful?
Yes
No
Wednesday, August 13th, 2025 AT 10:36 AM
Tiny
IAMTUROK
  • MEMBER
  • 13 POSTS
Thank you for the response. And for the most part the drive side and center passenger vent blows cold. The passenger door side vent blows warm air. And sometimes the ac will be blowing cold on the other vents and then switch to heat. I don’t know if it’s a summer temperature thing since I’m in Texas or can the blender actuators randomly switch to heat?
Was this
answer
helpful?
Yes
No
Wednesday, August 13th, 2025 AT 10:40 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
Hmm, not really, it should not turn the heat, but can you tell if the AC stops working and this is why it gets hot or if the HVAC system turns the heater on? Here is the location of the passenger side blend door actuator. You will need to remove the glovebox. Check out the images (below).
Image (Click to make bigger)
Thumb
Was this
answer
helpful?
Yes
No
Wednesday, August 13th, 2025 AT 10:50 AM
Tiny
IAMTUROK
  • MEMBER
  • 13 POSTS
I can’t tell if it stops or switches to heater. It has only happened in the afternoons during the summer time. Awesome thank you for the picture. I am gonna try replacing the actuator this weekend hopefully and see if it helps.
Was this
answer
helpful?
Yes
No
Wednesday, August 13th, 2025 AT 10:53 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
Sounds good, let me know if anything changes after the repair, in case we need to continue.
Was this
answer
helpful?
Yes
No
Wednesday, August 13th, 2025 AT 11:03 AM
Tiny
IAMTUROK
  • MEMBER
  • 13 POSTS
Hello so I replaced the actuator and the far passenger vent is still blowing warm air while the center dash vent is blowing cold air. I’ve checked it on both dual and individual ac temps and it’s the same. What else could it be?
Was this
answer
helpful?
Yes
No
Monday, August 18th, 2025 AT 10:04 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
If you replaced the actuators let try rebooting the system so it can recalibrate. This guide will show you how.

https://www.2carpros.com/articles/step-by-step-guide-to-reset-your-cars-hvac-system-an-essential-for-every

Please go over this guide and get back to us.
Was this
answer
helpful?
Yes
No
Monday, August 18th, 2025 AT 10:58 AM
Tiny
IAMTUROK
  • MEMBER
  • 13 POSTS
Awesome. Thank you I will give this a try this evening.
Was this
answer
helpful?
Yes
No
Monday, August 18th, 2025 AT 1:51 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
Sounds good, let me know how it goes.
Was this
answer
helpful?
Yes
No
Monday, August 18th, 2025 AT 6:30 PM

Please login or register to post a reply.

Related Blend Door Actuator Replace/Remove Content