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Yet another heater problem

1K views 10 replies 4 participants last post by  MXTZV045 
#1 ·
I've searched for this problem on other threads, but couldn't quite find the same problem.

Anyways, when I'm stationary, the blower only works on 4(high) and not the other settings. However, when I'm moving, the first three settings work, but only with the intensity of the lowest setting. Not quite sure what's causing this, so any help is appreciated.
 
#5 ·
The Blower Motor Resistor would be my 1st guess also. But typically when BMR's go bad, the heater usually only works on high...

Weird
:blink:
 
#7 ·
I have also seen melted connectors at the BMR cause sporadic operation. Also a broken wire in the BMR well cause funky operation.
 
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