Section 3 (Engine Controls - Tests W/Codes - 2.3L): Summary
WARNING: This page is about a different car, the 1993 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
If no service code is present but driveability problem still exists, proceed to TESTS W/O CODES article in this section for symptom diagnosis or intermittent diagnosis procedures.