7B
Blower fan motor emits a chirping sound in proportion to its speed of rotation
There are various types of noise, ranging from those produced in the engine compartment to those from the passenger compartment, also from rumbling noises to whistling noises.
Abnormal Noise from Blower Fan Motor
| Condition |
Possible Cause |
Action |
|---|
|
Blower fan motor emits a chirping sound in proportion to its speed of rotation
|
Worn or damaged motor brushes or commutator
|
Repair or replace blower fan motor
|