Condition
| Possible Cause
| Correction
|
Blower Motor Noise
|
| • | Foreign material is on the fan. |
| • | The fan blades are broken or missing . |
| • | The blower motor has internal damage. |
|
| • | Remove the material. Reuse the blower motor if possible. |
| • | Replace the motor and fan assembly. |
| • | Replace the motor and fan assembly. |
|
A/C Compressor
Noise
|
| • | The compressor mounting bracket fasteners are not torqued to specifications. |
| • | The compressor mounting fasteners are not torqued to specifications. |
| • | The A/C compressor pulley bearing is faulty. |
|
| • | Inspect the compressor bracket to engine torque. |
| • | Inspect the compressor to bracket torque. |
| • | Replace the A/C compressor pulley and bearing. |
| • | Inspect the belt tensioner, the idler pulley and/or the belt. |
|
A/C Refrigerant Lines/Hoses Noise
|
| • | The lines or hoses are grounded. |
| • | The lines or hoses rub on the other components. |
|
| • | Reposition the A/C lines or hoses. |
| • | Reposition and secure the lines and hoses. |
|
HVAC
Module Noise
|
| • | Foreign material is in the A/C module. |
| • | The A/C module is not torqued to specifications. |
| • | The actuator door is damaged. |
|
| • | Remove the material from the case. |
| • | Torque the A/C module to specifications. |
| • | Repair or replace the door(s). |
|
