Poor Response On Acceleration
- Check mass airflow sensor (if equipped) for proper CO setting (if adjustable) and for broken filament. Check mass airflow sensor resistance.
- Inspect induction system. Inspect for leaks downstream of throttle valve. Inspect duct between mass airflow sensor (if equipped) and throttle body.
- Check idle speed.
- Check injector operation and opening duration. Inspect injectors for leaks.
- Verify fuel pump is okay. Check fuel pressure and pressure regulator. Inspect fuel line for leaks or restrictions. Check fuel filter.
- Ensure electrical harness, connectors, and wires are not broken or loose. Check all input signals to ECM.
- Check temperature sensor(s).
- Check oxygen sensor.