Noise Diagnosis - Air Conditioning (A/C) System. Chevrolet Prizm 2001

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2001 🢒 Prizm 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Noise Diagnosis - Air Conditioning (A/C) System

Condition

Possible Cause

Compressor Noise

Resonant compressor noises are not a cause for alarm. However, irregular noises or rattles may indicate broken parts or excessive wear.

•	The A/C system is overcharged. Refer to Refrigerant Recovery and Recharging .

•	The compressor mounting bolts are not torqued to specification.

•	The compressor pulley bearing is faulty.

•	The compressor drive belt is slipping.

Refrigerant Line/Hose Noise

•	The lines/hoses are grounded. Reposition the A/C lines/hoses.

•	The lines/hoses are rubbing on other components. Position and secure the A/C lines/hoses.

Internal Compressor Noise

•	A faulty piston shoe

•	A faulty bearing

•	A faulty cylinder

•	A faulty shaft

Compressor Clutch Noise

•	A faulty compressor clutch. Replace the compressor clutch. Refer to Compressor Clutch Plate and Hub Assembly Removal and Compressor Clutch Plate/Hub Assembly Install .

•	A faulty bearing. Replace the compressor. Refer to Air Conditioning Compressor Replacement .

HVAC Module Noise

•	Foreign material is in the HVAC module.

•	The HVAC module is not torqued to specification.

•	The actuator doors are damaged.

•	The actuator door seals are damaged.

Blower Motor Noise

•	Foreign material is on the fan.

•	The fan blades are damaged.

•	The blower motor has internal damage.