Fuel Charging and Controls

Fuel Charging and Controls - 4.2L

Inspection and Verification
1. Verify the customer concern.
2. Visually inspect for obvious signs of damage and system integrity.

Mechanical Electrical
- Fuel level - Fuses
- Fuel leaks - Loose or corroded electrical connectors
- Damaged fuel lines - Harnesses
- Damaged push connect fittings - Sensor (s)
- Fuel contamination/grade/quality - Engine Control Module (ECM)
- Throttle body
- Damaged fuel tank filler pipe cap
- Damaged fuel tank filler pipe

3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
4. If the cause is not visually evident and there are clear symptoms refer to the Symptom Chart, alternatively, check for Diagnostic Trouble Codes (DTCs) and refer to the DTC Index.