Engine Misfires Or Has Lack Of Power

Verify air filter is clean.
Check fuel filter for restriction.
Check closed throttle position switch
Check coil resistance.
Check mass airflow sensor for cracks.
Check EGR valve and solenoid for correct operation (if equipped).
Ensure fuel system pressure is correct.
Check purge control valve operation.
Check atmospheric pressure sensor.
Check ignition system for intermittent operation.
Check for restricted catalytic converter.
Check Variable Resonance Induction System (VRIS) for correct operation (if equipped).
Check Variable Inertia Charge System (VICS) for correct operation (if equipped).
Check crankshaft position sensor.
Check turbocharger or supercharger system (if equipped) for wear or malfunctioning parts. Turbo system inspection should include the following: Turbo Precontrol Wastegate Control Turbo Control Charge Control Charge Relief