Blower Motor runs on high no matter where the fan selector switch is set...

1998 HONDA CIVIC
205,000 MILES
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REKAHN
  • MEMBER
  • 6 POSTS
Here recently, the blower motor runs on high no matter where the fan selector switch is set, even in the off position. The fan selector switch also controls the A/C which does work correctly, but the blower will run on high no matter where it is set. The relay checks out ok and unplugging the resistor pack terminal has no effect.
Sep 17, 2013 at 8:49 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
replace the relay with a l;ike one an dsee if it stops, the relay may check out ok but is stuck in on position then check for melted wires or unplug the switch at control head and see if that is bad as it could be.
Sep 17, 2013 at 11:21 PM
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REKAHN
  • MEMBER
  • 6 POSTS
At some point the blower motor was replaced and they did a shoddy job connecting the wires together, which caused the the motor to connect to ground at all times, causing it to run on high even with the switch in the off position.
Sep 19, 2013 at 10:24 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
that really doesn't sound right it sounds like it Doesn't have a ground more than anything. have pro look at it.
Sep 19, 2013 at 11:38 PM
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