Preliminary Checks

WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 1991 Ford Ranger, 1991 Ford RV Cutaway, 1991 Ford Pickup, 1991 Ford F-Super Duty, and 1991 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.

Before diagnosing problems in ignition system, ensure following systems and components are in good condition and operating properly.

Battery
State of tune
Fuel delivery and injection system
All wiring and vacuum connection
Air cleaner and ducts
Cooling system