2005 Ford Explorer Sport Trac Owner Guide 3rd Printing - Page 239

Maintenance and Specifications 3. The fuel cap may not have been securely tightened. See Fuel filler cap in this chapter. These temporary malfunctions can be corrected by filling the fuel tank with good quality fuel and/or properly tightening the fuel cap. After three driving cycles without these or any other temporary malfunctions present, the Check engine/Service engine soon light should turn off. (A driving cycle consists of a cold engine startup followed by mixed city/highway driving.) No additional vehicle service is required. If the Check engine/Service engine soon light remains on, have your vehicle serviced at the first available opportunity. 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. 239 2005 Explorer Sport Trac (p27) Owners Guide (post-2002-fmt) USA (fus)