A/C not working on settings two and three

2002 MAZDA PROTEGE
130,600 MILES
Avatar
AHH
  • MEMBER
  • 1 POST
My son's car's A/C is working on speeds 1 and 4, but not on 2 and 3 most of the time. The fan works on all speeds.

Is the relay behind the glove box the issue or something else?
Jun 7, 2022 at 5:43 PM
Advertisement
Avatar
JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Hi,

Chances are the blower motor resistor is failing. It is located behind the glove box. If you look at the pic below, it provides the directions for the removal and replacement of the resister.

Take a look at the directions and let me know if you have questions.

Take care,

Joe

See pic below.
Image (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Jun 7, 2022 at 9:02 PM
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.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.