Heater fan works on high speed only?

2007 FORD RANGER
6 CYL • 2WD • AUTOMATIC
Avatar
ALPHONSUS
  • MEMBER
  • 2 POSTS
Heater fan works on high speed only. Replaced the resistor and checked fuses still not working. Is there a relay and where is it? What about the speed control switch, how do I check it or replace it?
Nov 15, 2010 at 5:24 PM
Advertisement
Avatar
WRENCHTECH
  • ✓Experienced Mechanic
  • 20,760 POSTS
It has a relay but that supplies full time power. the speeds are controlled on the ground side by the switch and the resistor. Lets replace the blower fan resistor that should fix it. Check out the diagrams (Below). Please let us know what happens.
Image (Click to enlarge)
Attached Media
Nov 15, 2010 at 5:36 PM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
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.

Ask a new question

Frequently Asked Problems for This Vehicle