2002 Ford Explorer Owner's Manual - Page 157

Maintenance and Specifications The following signs could indicate a problem with your emission control system: • Fluid leaks • Strange odors • Smoke • Loss of engine power • Illumination of the charging system, temperature, or "Check Engine" light in the instrument panel. Exhaust leaks may result in harmful and potentially lethal fumes entering the passenger compartment. It is unlawful to intentionally remove an emission control device or prevent it from working. Information about your vehicle's emission system is on the Vehicle Emission Control Information decal located on or near the engine. READINESS FOR INSPECTION/MAINTENANCE (I/M) TESTING It may be a legal requirement in your area to pass an I/M test of the on-board diagnostics system. If the system or battery has just been serviced, the on-board diagnostic system is reset to a "not ready for I/M test" condition. To ready the system, allow the vehicle to sit for at least eight hours without starting. Then, start the engine and complete the following driving cycle: 1. Drive on an expressway or highway for at least 10 minutes. 2. Drive in stop-and-go traffic for at least 20 minutes with a minimum of four idle periods. The engine must warm up to its normal operating temperature. Once started, do not turn off the engine until the above drive cycle is complete. Note: If your "Check Engine" light is on, your vehicle may not pass an I/M test. 157