A/C fan speed

38,000 MILES • 3.0L • V6 • AUTOMATIC
Avatar
CFRINGO333
  • MEMBER
  • 5 POSTS
My fan speed stops increasing at speed 5 but it only happens when the vent setting is on the vents facing the driver and passenger. Any ideas or suggestions?
Aug 5, 2019 at 11:08 AM
Avatar
STRAILER
  • ✓Experienced Mechanic
  • 55,549 POSTS
Hello,

It sounds like the control head could be out. To be sure lets check the fuses that run the system first. Here is a guide to help us with the fuse locations and the blower motor wiring diagrams so you can see how the system works and which fuses to check:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

If all fuses are okay a CAN scan will help find a trouble codes for us.

https://youtu.be/InIlnsjOVFA

If the control module is bad here are the repair instructions below. Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
Aug 7, 2019 at 11:59 AM
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Frequently Asked Problems for This Vehicle