Inspection and Verification
WARNING: This page is about a different car, the 2003 Ford Thunderbird. However, it is still accessible from the selected car via links, so may be relevant.
- Verily the customer concern by running the engine or by road testing the vehicle.
- Visually inspect for obvious signs of mechanical or electrical damage. Refer to the following chart.
- Inspect the wiring and connectors of the HO2S or catalyst monitor sensors for looseness, corrosion or other damage.
- If the concern is not visually evident, determine the symptom and proceed to the symptom chart.