1992 Ford F 150 Been Having Problems Our Heater Finally Found Fixed Air Temp

1992 FORD F-150
255,000 MILES
Avatar
TERRY BISSETT
  • MEMBER
  • 1 POST
We have been having problems with our heater. we finally found and fixed the air temp problem, FINALLY... Hot air. Now we need to figure out why the airflow control switch only works on low or max high. Please someone help me, help my husband fix this problem.
Nov 2, 2012 at 5:27 AM
Advertisement
Avatar
DRCRANKNWRENCH1
  • ✓ASE Certified Mechanic
  • 3,435 POSTS
  • ASE Certified Mechanic
The blower motor resistor may be failing. Either that or the switch at the control panel is going bad. More than likley it is the resistor.
Nov 2, 2012 at 8:48 AM
Avatar
TERRYBISSETT
  • MEMBER
  • 1 POST
Thank you for you help, maybe you can instruct me on if I can test the resistor and how to do that, or should I just replace it. Also is the blower motor and the blower motor resistor two separate parts?
Nov 2, 2012 at 4:54 PM
Avatar
DRCRANKNWRENCH1
  • ✓ASE Certified Mechanic
  • 3,435 POSTS
  • ASE Certified Mechanic
You will have to get the spec on the resistance for the motor resistor and it is not always published. Most of the time it is easiest to rplace the resistor as they are genrally less than $20. Try going to www.rockauto.com to get one as they have extremly good prices on well known brands and have a great reputation.
Nov 3, 2012 at 4:13 AM
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.