Diagnosis And Testing - Blower Motor: Noise
WARNING: This page is about a different car, the 2003 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
To verify that the blower is the source of the noise, unplug the blower motor wire harness connector and operate the heater-A/C system. If the noise goes away, possible causes include:
- Improper blower motor mounting
- Improper blower wheel mounting
- Blower motor faulty.
- Foreign material in blower wheel causing unbalance.