Maxim4 ... 7/1/2018
2002 Dodge Durango SLT 8 Cyl 4.70L
AC won't blow on high power without melting resistor
I have a 2002 Dodge Durango. The blower motor resistor burnt out as soon as I started using the AC this summer. I replaced the resistor and that one over heated as well. I then found that my blower motor was pulling too many amps on high power (level 4) and that caused the resistor to over heat. (Level 1-3 does not cause it to overheat). So i replaced the resistor again. Put a brand new blower motor and relay as well. And what do i get? The SAME problem. Plus there is a puddle of water on my passenger side floor. Related? I dont know. Its over 100 degrees everyday this week and i reallt need help!
The water on the passenger side floor may be due to a heater core leak inside the HVAC box under the dash. That leak may then be gumming up the blower motor so that it draws too much current when operated at high speed. So see if the water has any cooling system odor, and if so then that would help to corroborate this theory particularly if you are also loosing coolant from the engine fill bottle.