SPONSORED LINKS

Blower works on high

Tiny
SUDSY74
  • MEMBER
  • 1985 CHEVROLET TRUCK
  • V8
  • 4WD
  • AUTOMATIC
  • 10,000 MILES
Hello great web site. I have a 85 chevy scottsdale. When I turn on the switch to operate the heater or a/c it only works on high. I replaced the blower and the switch in the cab. What else would cause the fan to blow only on high and not on low or medium. Thanks for your help scott
SPONSORED LINKS
Monday, August 17th, 2009 AT 6:19 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,640 POSTS
Hello,

It sounds like the blower motor resistor has gone out but to be sure lets test the system. Here is a blower motor wiring diagram and guide so you can do some testing.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Check to see it losses power here are the diagram (Below)

Please let us know what happens.

Cheers, Ken
Images (Click to make bigger)
Thumb
Thumb
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, November 17th, 2017 AT 7:17 PM

Please login or register to post a reply.

Related Blower Fan Speed Content

VIEW MORE

Sponsored links