My heater blower won't run on high speed

Tiny
AFASTER69
  • MEMBER
  • 1991 CHEVROLET S-10
  • 78,000 MILES
My blower runs very slow on lower settings and not at all on high,
I have replaced blower motor and resistor thingee.
Wednesday, October 5th, 2011 AT 4:09 PM

1 Reply

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Check the actual voltage reading at the blower motor, check ground also.

When hi blower relay is energized, battery voltage goes to the blower motor. No resistors for high-speed.
Image (Click to make bigger)
Thumb
Was this
answer
helpful?
Yes
No
Wednesday, October 5th, 2011 AT 4:20 PM

Please login or register to post a reply.

Related Blower Fan Speed Content

VIEW MORE