For 1990-2009 cars

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.

• | The belt slips.

• | 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).