Chart 7
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2005 Ford RV Cutaway, 2005 Ford Pickup, 2005 Ford F550 Super Duty, 2005 Ford F450 Super Duty, and 2005 Ford Excursion. However, it is still accessible from the selected car via links, so may be relevant.
- Lack/Loss Of Power: Acceleration, Cruise
- Runs Rough: Acceleration, Cruise
- Misses: Idle, Acceleration, Cruise
- Buck/Jerk: Acceleration, Cruise, Deceleration
- Hesitation/Stumble: Acceleration
- Surge: Acceleration, Cruise
- Poor Fuel Economy
Carry out the following preliminary checks:
- Confirm brakes are not dragging.
- Check for oil in coolant.
- Check for correct engine oil level.
- Confirm acceptable SAE oil viscosity and API rating of oil.
- Confirm oil change within 12,070 km (7,500 miles).
- Check air intake system: check for intake restriction. Air filter restriction gauge/air filter.
- Check the manifold absolute pressure (MAP) sensor hose for holes, blockage, or disconnection.
- Check the exhaust pressure (EP) sensor and tube for holes, blockage, or disconnection.
- Check the intake system for leaks.
- Check for low boost pressure.
- Check for over boost condition.
- Check for sufficient clean fuel.
- Check for air in fuel.
- Compare loaded weight of vehicle with performance expectations.
- Power monitor active.
- Transmission concerns.
| SYSTEM/COMPONENT | REFERENCE ( PINPOINT TESTS - 6.0L DIESEL unless noted) |
|---|---|
| Carry out the KOEO Injector Electrical Self Test (Click Test) | GO to the appropriate pinpoint test if a fault is indicated. |
| Check For Biased Injection Control Pressure (ICP) Sensor | GO to Pinpoint Test Q . |
| Check Fuel Pump Pressure | CARRY OUT ELECTRIC FUEL PUMP PRESSURE Test. |
| Check Fuel Regulator | INSTALL a new regulator valve if there is evidence of sticking or foreign material. |
| Check For Aerated Oil | CARRY OUT the OIL AERATION TEST . |
| Injection Control Pressure Test | CARRY OUT the LOW IDLE STABILITY (ICP PRESSURE) Test. |
| Check For Low Fuel Injection Control Module (FICM) Power | GO to Pinpoint Test S . |
| Check Lubrication Pressure | REFER to ENGINE - 6.0L DIESEL for specifications. |
| Check For Biased EP Sensor | GO to Pinpoint Test X . |
| Check For Engine Wear | CARRY OUT the CRANKCASE PRESSURE TEST . |
| Check For Piston Or Valve Leaks | REFER to ENGINE - 6.0L DIESEL . |
| Check For Exhaust Restriction | MEASURE the EP. If the EP is greater than 234 kPa (34 psi) or 2 volts, LOCATE and REPAIR the restriction in the exhaust system. VERIFY the repair. |
| Atmospheric Pressure Rationality Check | GO to DIAGNOSTIC METHODS PARAMETER IDENTIFICATION (PID) . With KOEO, SELECT Parameter Identification (PID). SELECT PIDs: EP, MAP and BARO. If any PID values/readings deviated from atmospheric pressure in your locale by more than 10 kPa (1.5 psi), GO to the appropriate pinpoint test for the sensor with the largest difference. |
| Check For Biased EOT Sensor | GO to L: Engine Oil Temperature (EOT) Sensor STEP L17. |
| Transmission Concerns | REFER to AUTOMATIC TRANSAXLE/TRANSMISSION . |
| Check EGR Operation | CARRY OUT EXHAUST GAS RECIRCULATION (EGR) POSITION Test. |
| Check Mass Air Flow Performance | GO to Pinpoint Test J . |
| Check Power Monitor | GO to Pinpoint Test AT . |
| Check Turbocharger | CARRY OUT the BOOST PRESSURE TEST . |
| Check Injector Operation | CARRY OUT the INJECTOR INTERRUPT FOR ENHANCED DIAGNOSTICS Test. |