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1987 Ford Truck heater control switch

Tiny
PETROSKIE
  • MEMBER
  • 1987 FORD TRUCK
  • V8
  • 4WD
  • AUTOMATIC
  • 112,548 MILES
My heater control switch only works on the lowest setting nomatter what setting you move it to. I replaced the blower motor, thinking maybe somthing was wrong with it from advise from a backyard mechanic. Could you please point me in the right direction on what to do next. Thanks for your time.
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Saturday, November 8th, 2008 AT 11:42 AM

1 Reply

Tiny
MIKE H R
  • MECHANIC
  • 3,094 POSTS
Under the hood disconeect the heater motor connection. With a static light chec to see if there is a difernce in voltage when the switch it turned up or down. If no diference check the fan switch control under the dash.
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Tuesday, December 16th, 2008 AT 8:36 PM

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