|
|
BASIC AIR CONDITIONING TROUBLE SHOOTING CHART HEATER SYSTEM TROUBLE SHOOTING SUBJECT, DIAGNOSTIC, or TESTING articles available in the section(s) CONDITION POSSIBLE CAUSE Compressor Not Working Compressor clutch circuit open. ..... Compressor clutch coil inoperative. ..... Poor clutch ground connection. ..... Fan belts loose. ..... Thermostatic switch inoperative. ..... Thermostatic switch not adjusted. ..... Ambient temperature switch open. ..... Superheat fuse blown. Excessive Noise or Vibration Missing or loose mounting bolts. ..... Bad idler pulley bearings. ..... Fan belts not tightened correctly. ..... Compressor clutch contacting body. ..... Excessive system pressure. ..... Compressor oil level low. ..... Damaged clutch bearings. ..... Damaged reed valves. ..... Damaged compressor. Insufficient or No Cooling; Compressor Working Expansion valve inoperative. ..... Heater control valve stuck open. ..... Low system pressure. ..... Blocked condenser fins. ..... Blocked evaporator fins. ..... Vacuum system leak. ..... Vacuum motors inoperative. ..... Control cables improperly adjusted. ..... Restricted air inlet. ..... Mode doors binding. ..... Blower motor inoperative. ..... Temperature above system capacity. NOTE: This is GENERAL information. This article is not intended to be specific to any
1998 Chevrolet Pickup C1500 GENERAL INFORMATION Trouble Shooting - Basic Procedures
|