Section 10 (Engine Controls - Basic Testing - 4.2L): Summary
WARNING: This page is about a different car, the 1997 Ford Econoline and 1997 Ford Club Wagon. However, it is still accessible from the selected car via links, so may be relevant.
If no faults were found while performing BASIC DIAGNOSTIC PROCEDURES, proceed to TESTS W/CODES - 4.2L article. If no trouble codes are found self-diagnostics, proceed to TESTS W/O CODES - 4.2L article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.) or intermittent diagnostic procedures.