Blower motor runs only at low speed

89,000 MILES • 5.0L • V8 • RWD
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GORDON HAMMOND
  • MEMBER
  • 1 POST
When I turn the heat or air conditioner on all the blower runs on is low speed.
Aug 18, 2016 at 4:49 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
this may be burnt wires at switch or a resistor or a bad switch. the resistor may be on heater box under-hood, been so long I forgot and we do not list it in our manual. if this is automatic temperature control where you set temperature it is completely different.
Mar 22, 2021 at 7:48 AM
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