Symptom Index - Definitions

SYMPTOM DIAGNOSTIC TEST
Hard Start
Checking The Fuel Pressure
Checking The ECT Sensor
Checking Throttle Position Sensor
Checking MAP Sensor
Checking Idle Air Control Motor Operation
Checking EGR System
Checking IAT Sensor

Start And Stall
Checking PCM Power And GND CKT
Checking The Fuel Pressure
Checking ECT Sensor
Checking Throttle Position Sensor
Checking MAP Sensor
Checking Idle Air Control Motor Operation

Hesitation/sag/stumble
Checking PCM Power And GND CKT
Checking The Fuel Pressure
Checking ECT Sensor
Checking Throttle Position Sensor
Checking MAP Sensor

Surge
Checking Idle Air Control Motor Operation
Checking IAT Sensor
Checking PCM Power And GND CKT
Checking The Fuel Pressure
Checking ECT Sensor
Checking Throttle Position Sensor
Checking MAP Sensor
Checking Idle Air Control Motor Operation

Lack Of Power/sluggish
Checking PCM Power And GND CKT
Checking The Fuel Pressure
Checking ECT Sensor
Checking Throttle Position Sensor
Checking MAP Sensor
Checking Idle Air Control Motor Operation

Spark Knock Detonation
Checking PCM Power And GND CKT
Checking The Fuel Pressure
Checking ECT Sensor
Checking Throttle Position Sensor
Checking MAP Sensor
Checking Idle Air Control Motor Operation

Cuts Out/Misses
Checking PCM Power And GND CKT
Checking The Fuel Pressure
Checking Idle Air Control Motor Operation

Backfire/Popback
Checking PCM Power And GND CKT
Checking The Fuel Pressure
Checking MAP Sensor

Runs Rough/Unstable/Erratic Idle
Checking PCM Power AND GND CKT
Checking The Fuel Pressure
Checking ECT Sensor
Checking Throttle Position Sensor
Checking MAP Sensor
Checking Idle Air Control Motor Operation
Checking IAT Sensor

Poor Fuel Economy
Checking PCM Power And GND CKT
Checking The Fuel Pressure
Checking ECT Sensor
Checking Throttle Position Sensor
Checking MAP Sensor
Checking Idle Air Control Motor Operation
Checking IAT Sensor