Chart 6
WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 2004 Mercury Sable, 2004 Mercury Mountaineer, 2004 Mercury Monterey, 2004 Mercury Marauder, and 2004 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.
Unique Idle Concerns:
- Low/Slow Idle
Stalls/Quits
- Deceleration
| SYSTEM/COMPONENT | REFERENCE ( PINPOINT TEST - CNG, FLEX-FUEL & GASOLINE ) unless noted |
|---|---|
| Verify fuel filler cap is properly tightened | Visual |
| For A/T with Stalls/Quits on deceleration: Transmission | Automatic Transaxle/Transmission - Refer to the appropriate AUTOMATIC TRANSMISSION article (Diagnosis By Symptom: Torque Converter Concerns). |
| For Low idle with A/C on (4.6/5.4L/6.8L E -Series): Check ACCS PID with A/C on and engine running (PID should indicate ON when A/C clutch is engaged). (On applications where the PCM cannot control the A/C clutch on and off, the PCM uses the ACCS circuit to determine additional load on the engine.) |
ACCS PID does not indicate ON with A/C clutch engaged: GO to M: Air conditioning clutch relay circuit STEP KM7. |
| Fuel Delivery System | Natural Gas Applications: GO to B: Natural Gas Fuel Delivery System STEP HB1. All Others: GO to C: Fuel Delivery System STEP HC1. |
| Intake Air System | GO to U: Intake Air Systems STEP HU1. |
| Base Engine | Engine System - Refer to the appropriate ENGINE article. |
Additional Checks:
|
Visual |
| Additional Testing | GO to Z: Intermittent STEP Z1. |