What would cause a blower motor to burn out?

1997 ISUZU HOMBRE
Avatar
JW1331
  • MEMBER
  • 2 POSTS
When I bought the truck, the air conditioner would not always blow. Eventually, there was a burning smell and smoke coming from the vents. I replaced the blower motor. The old motor had spots where it looked burnt. Within an hour, the same burning smell came back. What would cause these motors to burn out?
Nov 8, 2011 at 4:06 PM
Advertisement
Avatar
JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
did the second motor go bad or are you smelling the blower motor resister going bad?
Nov 8, 2011 at 4:08 PM
Avatar
JW1331
  • MEMBER
  • 2 POSTS
You think it could be the resistor making the smell? Would it be intermitten if that was the case?
Nov 8, 2011 at 4:09 PM
Avatar
JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Usually, the fan motor will start to go bad and draw too many amps. That will cause the resister to burn up. There is a chance that it was damaged and now you smell it.
Nov 8, 2011 at 5:58 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