Section 31 (Engine Controls - Tests W/Codes - EEC-IV (4.6L)): Summary
WARNING: This page is about a different car, the 1994 Mercury Grand Marquis, 1994 Lincoln Town Car, 1994 Lincoln Mark VIII, and 1994 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
If no diagnostic trouble code is present but driveability problem still exists, see TESTS W/O CODES - EEC-IV (4.6L) article in this section for symptom diagnostic or intermittent diagnosis procedures.