Section 2 (Engine Controls - Tests W/Codes - EEC-IV): Summary
WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 1992 Mercury Tracer, 1992 Mercury Topaz, 1992 Mercury Sable, 1992 Mercury Grand Marquis, and 1992 Mercury Cougar. However, it is still accessible from the selected car via links, so may be relevant.
If no service code (or pass code 11-1-11 or 111-1-111) is present but driveability problem still exists, proceed to EEC-IV DIAGNOSIS BY SYMPTOM . If driveability problem still cannot be located, go to TESTS W/O CODES article in the ENGINE PERFORMANCE Section for intermittent diagnosis procedures.