Symptom Index - Definitions

SYMPTOM DIAGNOSTIC TEST

Hard Start Checking The Fuel Pressure
Checking The ECT Sensor
Checking Throttle Position Sensor
Checking MAP Sensor
Checking IAC Motor Operation
Checking EGR System
Checking IAT Sensor

Start and Stall Checking PCM Power And Ground Circuit
Checking The Fuel Pressure
Checking ECT Sensor
Checking Throttle Position Sensor
Checking MAP Sensor
Checking IAC Motor Operation

Hesitation/Sag/Stumble Checking PCM Power And Ground Circuit
Checking The Fuel Pressure
Checking ECT Sensor
Checking Throttle Position Sensor
Checking MAP Sensor

Surge Checking IAC Motor Operation
Checking IAT Sensor
Checking PCM Power And Ground Circuit
Checking The Fuel Pressure
Checking ECT Sensor
Checking Throttle Position Sensor
Checking MAP Sensor
Checking IAC Motor Operation

Lack of Power/Sluggish Checking PCM Power And Ground Circuit
Checking The Fuel Pressure
Checking ECT Sensor
Checking Throttle Position Sensor
Checking MAP Sensor
Checking IAC Motor Operation

Spark Knock/Detonation Checking PCM Power And Ground Circuit
Checking The Fuel Pressure
Checking ECT Sensor
Checking Throttle Position Sensor
Checking MAP Sensor
Checking IAC Motor Operation

Cuts Out/Misses Checking PCM Power And Ground Circuit
Checking The Fuel Pressure
Checking IAC Motor Operation

Backfire/Popback Checking PCM Power And Ground Circuit
Checking The Fuel Pressure
Checking MAP Sensor

Runs Rough,
Unstable/Erratic Idle Checking PCM Power And Ground Circuit
Checking The Fuel Pressure
Checking ECT Sensor
Checking Throttle Position Sensor
Checking MAP Sensor
Checking IAC Motor Operation
Checking IAT Sensor

Poor Fuel Economy Checking PCM Power And Ground Circuit
Checking The Fuel Pressure
Checking ECT Sensor
Checking Throttle Position Sensor
Checking MAP Sensor
Checking IAC Motor Operation
Checking IAT Sensor