Handling No Trouble Code Problems
SYMPTOMDIAGNOSTIC TEST
HARD START
CHECKING SECONDARY IGNITION SYSTEM
Checking Secondary Ignition
CHECKING ENGINE VACUUM
Checking Engine Vacuum
CHECKING THE FUEL PRESSURE
Checking Fuel Delivery
CHECKING COOLANT SENSOR CALIBRATION
CHECKING THROTTLE P0SITION SENSOR CALIBRATION
Checking Throttle Position Sensor Calibration
CHECKING MAP SENSOR CALIBRATION
Checking MAP Sensor Calibration
CHECKING THE MINIMUM IDLE AIR FLOW
Checking Minimum Idle Air Flow
CHECKING IDLE AIR CONTROL MOTOR OPERATION
Checking Idle Air Control Motor
CHECKING ENGINE MECHANICAL SYSTEMS
Checking Engine Mechanical Systems
CHECKING EVAP EMISSION SYSTEM
Checking EVAP System
CHECKING EGR SYSTEM CHECKING IAT SENSOR
Checking EGR System
START AND STALL
CHECKING SECONDARY IGNITION SYSTEM
Checking Secondary Ignition
CHECKING PCM POWER AND GND CKT
Checking PCM Power and Ground Circuits
CHECKING THE FUEL PRESSURE
Checking Fuel Delivery
CHECKING COOLANT SENSOR CALIBRATION
CHECKING THROTTLE P0SITION SENSOR CALIBRATION
Checking Throttle Position Sensor Calibration
CHECKING MAP SENSOR CALIBRATION
Checking MAP Sensor Calibration
CHECKING THE MINIMUM IDLE AIR FLOW
Checking Minimum Idle Air Flow
CHECKING IDLE AIR CONTROL MOTOR OPERATION
Checking Idle Air Control Motor
HESITATION/SAG/STUMBLE
CHECKING SECONDARY IGNITION SYSTEM
Checking Secondary Ignition
CHECKING PCM POWER AND GND CKT
Checking PCM Power and Ground Circuits
CHECKING ENGINE VACUUM
Checking Engine Vacuum
CHECKING THE FUEL PRESSURE
Checking Fuel Delivery
CHECKING COOLANT SENSOR CALIBRATION
CHECKING THROTTLE P0SITION SENSOR CALIBRATION
Checking Throttle Position Sensor Calibration
CHECKING MAP SENSOR CALIBRATION
Checking MAP Sensor Calibration
CHECKING THE MINIMUM IDLE AIR FLOW
Checking Minimum Idle Air Flow
CHECKING FOR OXYGEN SENSOR SWITCHING
Checking For Oxygen Sensor Switching
CHECKING 02S HEATER
Checking O2S Heater
CHECKING IDLE AIR CONTROL MOTOR OPERATION
Checking Idle Air Control Motor
CHECKING ENGINE MECHANICAL SYSTEMS
Checking Engine Mechanical Systems
CHECKING EVAP EMISSION SYSTEM
Checking EVAP System
CHECKING EGR SYSTEM
Checking EGR System
CHECKING IAT SENSOR
Checking Intake Air Temperature Sensor
CHECKING PNP SWITCH
Checking Park/Neutral Position Switch
SURGE
CHECKING SECONDARY IGNITION SYSTEM
Checking Secondary Ignition
CHECKING PCM POWER AND GND CKT
Checking PCM Power and Ground Circuits
CHECKING THE FUEL PRESSURE
Checking Fuel Delivery
CHECKING COOLANT SENSOR CALIBRATION
CHECKING THROTTLE P0SITION SENSOR CALIBRATION
Checking Throttle Position Sensor Calibration
CHECKING MAP SENSOR CALIBRATION
Checking MAP Sensor Calibration
CHECKING THE MINIMUM IDLE AIR FLOW
Checking Minimum Idle Air Flow
CHECKING FOR OXYGEN SENSOR SWITCHING
Checking For Oxygen Sensor Switching
CHECKING IDLE AIR CONTROL MOTOR OPERATION
Checking Idle Air Control Motor
CHECKING EVAP EMISSION SYSTEM
Checking EVAP System
LACK OF POWER/SLUGGISH
CHECKING SECONDARY IGNITION SYSTEM
Checking Secondary Ignition
CHECKING PCM POWER AND GND CKT
Checking PCM Power and Ground Circuits
CHECKING THE FUEL PRESSURE
Checking Fuel Delivery
CHECKING COOLANT SENSOR CALIBRATION
CHECKING THROTTLE P0SITION SENSOR CALIBRATION
Checking Throttle Position Sensor Calibration
CHECKING MAP SENSOR CALIBRATION
Checking MAP Sensor Calibration
CHECKING THE MINIMUM IDLE AIR FLOW
Checking Minimum Idle Air Flow
CHECKING FOR OXYGEN SENSOR SWITCHING
Checking For Oxygen Sensor Switching
CHECKING IDLE AIR CONTROL MOTOR OPERATION
Checking Idle Air Control Motor
CHECKING EGR SYSTEM
Checking EGR System
SPARK KNOCK/DETONATION
CHECKING SECONDARY IGNITION SYSTEM
Checking Secondary Ignition
CHECKING PCM POWER AND GND CKT
Checking PCM Power and Ground Circuits
CHECKING THE FUEL PRESSURE
Checking Fuel Delivery
CHECKING COOLANT SENSOR CALIBRATION
CHECKING THROTTLE P0SITION SENSOR CALIBRATION
Checking Throttle Position Sensor Calibration
CHECKING MAP SENSOR CALIBRATION
Checking MAP Sensor Calibration
CHECKING THE MINIMUM IDLE AIR FLOW
Checking Minimum Idle Air Flow
CHECKING FOR OXYGEN SENSOR SWITCHING
Checking For Oxygen Sensor Switching
CHECKING IDLE AIR CONTROL MOTOR OPERATION
Checking Idle Air Control Motor
CHECKING EVAP EMISSION SYSTEM
Checking EVAP System
CUTS OUT/MISSES
CHECKING SECONDARY IGNITION SYSTEM
Checking Secondary Ignition
CHECKING PCM POWER AND GND CKT
Checking PCM Power and Ground Circuits
CHECKING THE FUEL PRESSURE
Checking Fuel Delivery
CHECKING THE MINIMUM IDLE MR FLOW
Checking Minimum Idle Air Flow
CHECKING FOR OXYGEN SENSOR SWITCHING
Checking For Oxygen Sensor Switching
CHECKING IDLE AIR CONTROL MOTOR OPERATION
Checking Idle Air Control Motor
CHECKING EGR SYSTEM
Checking EGR System
BACKFIRE/ POPBACK
CHECKING SECONDARY IGNITION SYSTEM
Checking Secondary Ignition
CHECKING PCM POWER AND GND CKT
Checking PCM Power and Ground Circuits
CHECKING THE FUEL PRESSURE
Checking Fuel Delivery
CHECKING MAP SENSOR CALIBRATION
Checking MAP Sensor Calibration
CHECKING THE MINIMUM IDLE AIR FLOW
Checking Minimum Idle Air Flow
CHECKING FOR OXYGEN SENSOR SWITCHING
Checking For Oxygen Sensor Switching
CHECKING EGR SYSTEM
Checking EGR System
RUNS ROUGH/UNSTABLE/ERRATIC IDLE
CHECKING SECONDARY IGNITION SYSTEM
Checking Secondary Ignition
CHECKING PCM POWER AND GND CKT
Checking PCM Power and Ground Circuits
CHECKING ENGINE VACUUM
Checking Engine Vacuum
CHECKING THE FUEL PRESSURE
Checking Fuel Delivery
CHECKING COOLANT SENSOR CALIBRATION
CHECKING THROTTLE P0SITION SENSOR CALIBRATION
Checking Throttle Position Sensor Calibration
CHECKING MAP SENSOR CALIBRATION
Checking MAP Sensor Calibration
CHECKING THE MINIMUM IDLE AIR FLOW
Checking Minimum Idle Air Flow
CHECKING FOR OXYGEN SENSOR SWITCHING
Checking For Oxygen Sensor Switching
CHECKING 02S HEATER
Checking O2S Heater
CHECKING IDLE AIR CONTROL MOTOR OPERATION
Checking Idle Air Control Motor
CHECKING ENGINE MECHANICAL SYSTEMS
Checking Engine Mechanical Systems
CHECKING EVAP EMISSION SYSTEM
Checking EVAP System
CHECKING EGR SYSTEM
Checking EGR System
CHECKING IAT SENSOR
Checking Intake Air Temperature Sensor
CHECKING PNP SWITCH
Checking Park/Neutral Position Switch
POOR FUEL ECONOMY
CHECKING SECONDARY IGNITION SYSTEM
Checking Secondary Ignition
CHECKING PCM POWER AND GND CKT
Checking PCM Power and Ground Circuits
CHECKING ENGINE VACUUM
Checking Engine Vacuum
CHECKING THE FUEL PRESSURE
Checking Fuel Delivery
CHECKING COOLANT SENSOR CALIBRATION
CHECKING THROTTLE P0SITION SENSOR CALIBRATION
Checking Throttle Position Sensor Calibration
CHECKING MAP SENSOR CALIBRATION
Checking MAP Sensor Calibration
CHECKING THE MINIMUM IDLE AIR FLOW
Checking Minimum Idle Air Flow
CHECKING FOR OXYGEN SENSOR SWITCHING
Checking For Oxygen Sensor Switching
CHECKING 02S HEATER
Checking O2S Heater
CHECKING IDLE AIR CONTROL MOTOR OPERATION
Checking Idle Air Control Motor
CHECKING ENGINE MECHANICAL SYSTEMS
Checking Engine Mechanical Systems
CHECKING EVAP EMISSION SYSTEM
Checking EVAP System
CHECKING EGR SYSTEM
Checking EGR System
CHECKING IAT SENSOR
Checking Intake Air Temperature Sensor
CHECKING PNP SWITCH
Checking Park/Neutral Position Switch