Chart 5
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2004 Ford RV Cutaway, 2004 Ford Pickup, 2004 Ford F550 Super Duty, 2004 Ford F450 Super Duty, and 2004 Ford Excursion. However, it is still accessible from the selected car via links, so may be relevant.
- Unique Idle Concern: Slow Return to Idle
- Unique Idle Concern: Fast Idle
NOTE:
Perform the following preliminary checks:
- PCM system check.
- Accelerator pedal for binding, broken return spring, stuck condition (floor mats).
- External fuel source.
- Engine not reaching normal operating temperature.
- PTO and charge protect devices disengaged.
| SYSTEM/COMPONENT | REFERENCE (PINPOINT TEST - 6.0L DIESEL unless noted) |
|---|---|
| Perform Quick Test Operation | GO to DIAGNOSTIC METHODS - 6.0L DIESEL . PERFORM Quick Test Operation. If a fault is indicated, GO to the appropriate pinpoint test. |
| Check Accelerator Pedal | REPAIR if needed. |
| Check For Correct Oil Level | If overfilled, DRAIN crankcase to correct level. DETERMINE cause of overfill. |
| Check Engine Oil | If there is coolant or fuel contamination in engine oil, REPAIR as required. |
| Check For Fuel Contamination | GO to DIAGNOSTIC SUBROUTINES - 6.0L DIESEL , Performance Diagnostic Procedures. PERFORM the Sufficient Clean Fuel Test. |
| Check Parameter Identification (PIDS) | GO to DIAGNOSTIC METHODS - 6.0L DIESEL , Parameter Identification (PID). SELECT Parameter Identification (PID). WARM engine to normal operating temperature. SELECT PID EOT. If EOT value is below 38°C (100°F), INSTALL a new EOT sensor. Refer to the appropriate ENGINE article. |
| Check Turbocharger Ducting | REMOVE turbocharger inlet air duct. Inspect for debris/contamination. |
| Check EGR Operation | REFER to DIAGNOSTIC SUBROUTINES - 6.0L DIESEL , EGR Position Test. |
| Check for Biased ICP Sensor | GO to PINPOINT TEST Q: INJECTION CONTROL PRESSURE (ICP) SENSOR . |