Engine Misfires Or Has Lack Of Power
- Verify air filter is clean.
- Check fuel filter for restriction.
- Check vacuum switching valve operation.
- Check coil resistance.
- Check airflow meter for cracks.
- Check EGR valve and solenoid for correct operation (if equipped).
- Check purge control valve operation.
- Check airflow operation and resistance value.
- 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).
- Verify crank angle sensor (permanent magnet type) has correct resistance values.
- Check A/C cut-off system (if equipped).
- Ensure fuel system pressure is correct.
- Check turbocharger 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