Preliminary Checks
WARNING: This page is about a different car, the 1995 Ford Pickup, 1995 Ford F-Super Duty, and 1995 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Check for vacuum leaks. Check fuel quality (octane, winter/summer grade fuel, methanol, etc.). Check air intake system and air cleaner for leaks and/or restrictions. Check wiring harness connectors.