October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Engine Controls - Tests W/Codes - 4.6L: Introduction

NOTE: References to Natural Gas (NG) vehicles apply to Crown Victoria only.

Perform all steps in the BASIC TESTING article. If no fault is found while performing BASIC DIAGNOSTIC PROCEDURES, proceed with self-diagnostics. If no diagnostic trouble codes or only pass codes are found during, proceed to TESTS W/O CODES article for diagnosis by symptom.