System Tests (Evaporative Emissions): Notes
NOTE:
Evaporative emission diagnostic procedures for 2001 Cougar are not available from manufacturer.
NOTE:
Prior to performing any system test, see HOW TO USE SYSTEM TESTS under SYSTEM TESTS. If instructed to replace Powertrain Control Module (PCM) after performing a system test, new PCM must be programmed. See PROGRAMMING PCM .
Perform these tests when instructed during QUICK TEST or sent here from DIAGNOSTIC TROUBLE CODE REFERENCE CHARTS. Perform appropriate system test, see EVAPORATIVE EMISSIONS DIAGNOSTIC TROUBLE CODE DEFINITIONS table. For emission related symptom tests, see EVAPORATIVE EMISSIONS SYMPTOMS table. For component reference see Fig 1-Fig 7 .
EVAPORATIVE EMISSIONS DIAGNOSTIC TROUBLE CODE DEFINITIONS
| DTC | Description | Go To Test |
|---|---|---|
| P0442 | Small Leak In EVAP System | A |
| P0455 | Major Leak Or No Flow Detected | B |
| P1443 | Very Small Or No Purge Flow Detected | B |
| P1450 | Excessive Vacuum Detected In Fuel Tank | C |
EVAPORATIVE EMISSIONS SYMPTOMS
| Symptom | Go To Test |
|---|---|
| HISS WHEN OPENING FUEL CAP | D |
| EXCESSIVE FUEL ODOR | E |
| UNABLE TO REFUEL | F |
Fig 1: Identifying EVAP System Components (Continental, Mustang, Sable, Taurus & Contour & Mystique - Late Production)