77 ford heater problems

1977 FORD CUSTOM
V8 • 4WD • MANUAL
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NJNTJ2
  • MEMBER
  • 1 POST
My 77 ford 4x4 heater is not working properly. You turn the fan on and nothing comes out but when you drive down the road you get a forced air heat. I changed the under the dash heater fuse. What could the problem be?
Mar 2, 2011 at 10:43 AM
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FORD MAN
  • MEMBER
  • 115 POSTS
The switch itself.
Mar 2, 2011 at 11:17 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Check to make sure the blower motor is getting power. If it is and still doesn't run, replace the motor. If there is no power, work back through the resister to the switch.
Mar 21, 2011 at 7:50 AM
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