When I turn the heat or air conditioner on all the blower runs on is low speed.
Aug 18, 2016 at 4:49 AM
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.