Chart 7
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 Ford RV Cutaway, 2007 Ford Pickup, 2007 Ford F550 Super Duty, 2007 Ford F450 Super Duty, and 2007 Ford Econoline. 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 the 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.
- Compare loaded weight of vehicle with performance expectations.
- Power monitor active.
- Transmission concerns.
| SYSTEM/COMPONENT | REFERENCE (Pinpoint Test unless noted) |
|---|---|
| Carry out the KOEO On-Demand Self-Test | GO to the appropriate pinpoint test if a concern is indicated. |
| Carry out the KOEO Injector Electrical Self Test 6a and Power Balance test 6b. | GO toPERFORMANCE DIAGNOSTIC PROCEDURES . |
| Retrieve/Clear Continuous DTCs | GO to the appropriate pinpoint test if a concern is indicated. |
| Check Turbocharger | GO toPERFORMANCE DIAGNOSTIC PROCEDURES . CARRY OUT the Boost Pressure Test. |
| Injection Control Pressure Test | GO toPERFORMANCE DIAGNOSTIC PROCEDURES . CARRY OUT the Low Idle Stability (ICP Pressure) Test. |
| Check Fuel Pump Pressure and Restriction | GO toPERFORMANCE DIAGNOSTIC PROCEDURES . CARRY OUT the Electric Fuel Pump Pressure and Electric Fuel Pump Inlet Restriction Tests. |
| Carry out a slow neutral engine RPM run up in Park or neutral gear. | For symptom occurring between 1,200 RPM and 2,300 RPM, GO toPERFORMANCE DIAGNOSTIC PROCEDURES . CARRY OUT Power Balance Test. For symptom occurring between 3,000 RPM and 4,000 RPM, GO toPERFORMANCE DIAGNOSTIC PROCEDURES . Carry out Low Idle Stability (ICP Pressure). If ICP sensor and connector are OK, carry out the Injection Pressure Regulator Test. |
| 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. |
| Check the exhaust gas recirculation (EGR) system | GO toPERFORMANCE DIAGNOSTIC PROCEDURES . CARRY OUT the Exhaust Gas Recirculation (EGR) System Test. |
| Check Mass Air Flow Performance | refer to PINPOINT TEST J - Mass Air Flow (MAF) Sensor . |
| Check For Engine Wear | GO toPERFORMANCE DIAGNOSTIC PROCEDURES . CARRY OUT the Crankcase Pressure Test. |
| Check Lubrication Pressure | REFER to the appropriate ENGINE article. |
| Check For Aerated Oil | GO toPERFORMANCE DIAGNOSTIC PROCEDURES . CARRY OUT the Oil Aeration Test. |
| Check For Aerated Fuel | GO toPERFORMANCE DIAGNOSTIC PROCEDURES . CARRY OUT the Fuel Aeration Test. |
| Check Injector Operation | GO to Section 4 INJECTOR INTERRUPT FOR ENHANCED DIAGNOSTICS . CARRY OUT the Injector Interrupt For Enhanced Diagnostics Test. |
| Transmission Concerns | REFER to the appropriate AUTOMATIC TRANSMISSION article. |
| Atmospheric Pressure Rationality Check | GO toPARAMETER 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 Injection Control Pressure (ICP) Sensor | refer to PINPOINT TEST Q - Injection Control Pressure (ICP) Sensor . |
| Check For Biased EP Sensor | refer to PINPOINT TEST X - Exhaust Back Pressure (EBP) Sensor . |
| Check For Biased EOT Sensor | GO to L: Engine Oil Temperature (EOT) Sensor STEP PINPOINT TEST L15 - Check The Vehicle Harness. |
| Check Power Monitor | refer to PINPOINT TEST AT - FICM Circuit Fuel Delivery Error . |