6.4L Power Stroke Electrical – Turbocharger Actuator

• The turbocharger actuator is an electronic motor that controls the position of the vanes inside of the
high pressure turbocharger’s turbine housing.
• The turbocharger actuator is mounted directly to the high pressure turbo and is connected to the vanes
inside the turbine housing by a control arm.

 

10. August 2021 by samuel
Categories: 6.4L Power Stroke | Comments Off on 6.4L Power Stroke Electrical – Turbocharger Actuator

6.4L Power Stroke Electrical – Exhaust Gas Recirculation Valve (EGR Valve)

• The EGR valve is used to mix cooled exhaust gases with intake air to lower emissions and noise.
• The EGR valve is stepper motor controlled
• The valve is powered in both the open and close directions.

10. August 2021 by samuel
Categories: 6.4L Power Stroke | Comments Off on 6.4L Power Stroke Electrical – Exhaust Gas Recirculation Valve (EGR Valve)

6.4L Power Stroke Electrical – VCV (Volume Control Valve)

• The VCV regulates the delivery of fuel from the internal transfer pump (ITP) to the high pressure pumping                  elements.
• The VCV adjusts the low pressure side of the system to match the needs of the engine thus increasing efficiency.
• The VCV is permanently mounted to the high pressure pump and is not to be removed.
Removal of the VCV will result in replacement of the high pressure fuel injection pump.

NOTE: Fuel caps have been left off for visualization purposes. Always use fuel caps when servicing the high pressure fuel system!

 

10. August 2021 by samuel
Categories: 6.4L Power Stroke | Comments Off on 6.4L Power Stroke Electrical – VCV (Volume Control Valve)

6.4L Power Stroke Electrical – PCV (Pressure Control Valve)

• The PCV governs the fuel pressure that is delivered to the fuel injectors via the high pressure fuel rails and fuel             supply tubes.
• The PCV also acts as a dampening device for the fluctuations in pressure that occur during fuel delivery through           the pump and the injection process.
• The PCV is controlled by the ECM to maintain optimal fuel pressure throughout all engine operating conditions.
• The PCV is permanently mounted to the high pressure pump and is not to be removed.
Removal of the PCV will result in replacement of the high pressure fuel injection pump.

NOTE: Fuel caps have been left off for visualization purposes. Always use fuel caps when servicing the high pressure fuel system!

10. August 2021 by samuel
Categories: 6.4L Power Stroke | Comments Off on 6.4L Power Stroke Electrical – PCV (Pressure Control Valve)

6.4L Power Stroke Electrical – EGRT Outlet (EGR Cooler Outlet Temperature)

• The EGRT Outlet sensor is a two (2) wire thermistor type sensor.
• The EGRT outlet sensor’s internal thermistor forms a voltage divider with a pullup resistor inside the ECM.
• The ECM monitors exhaust temperature from the EGRT outlet sensor signal to aid in controlling the EGR valve           position and throttle position.

 

10. August 2021 by samuel
Categories: 6.4L Power Stroke | Comments Off on 6.4L Power Stroke Electrical – EGRT Outlet (EGR Cooler Outlet Temperature)

6.4L Power Stroke Electrical – FTS (Fuel Temperature Sensor)

• The FTS sensor is a two (2) wire thermistor sensor.
• The FTS sensor’s internal thermistor forms a voltage divider with a pullup resistor inside the ECM.
• The FTS sensor changes resistance when exposed to different temperatures.
• When the temperature of the fuel decreases, the resistance of the thermistor increases and the signal voltage                 increases.
• When the temperature of the fuel increases, the resistance of the thermistor decreases and the signal voltage                 decreases.

 

10. August 2021 by samuel
Categories: 6.4L Power Stroke | Comments Off on 6.4L Power Stroke Electrical – FTS (Fuel Temperature Sensor)

6.4L Power Stroke Electrical – EP (Exhaust Pressure)

• The EP sensor is a three (3) wire variable capacitance sensor.
• The ECM supples a 5 volt reference signal which the EP sensor uses to produce a linear analog voltage that                   indicates pressure.
• The EP measures exhuast back pressure so that the ECM can control the EGR, and the high pressure turbocharger     via the turbocharger actuator.

NOTE: Washing a hot engine can have negative effects on this sensor!
NOTE: This sensor is gray in color for the 6.4L and black in color for the 6.0L. Some early 6.4L engines may be equipped with black sensors.
Do not interchange 6.0L EP sensors with 6.4L EP sensors, these sensors are different.

NOTE: Pay special attention to differentiating between the MAP sensor and the EP sensor, do not interchange them!

 

10. August 2021 by samuel
Categories: 6.4L Power Stroke | Comments Off on 6.4L Power Stroke Electrical – EP (Exhaust Pressure)

6.4L Power Stroke Electrical – MAP (Manifold Absolute Pressure)

• The MAP sensor is a three (3) wire variable capacitance sensor.
• The ECM uses the MAP sensor signal to assist in the calculation of EGR duty cycle, Fuel Delivery, and Throttle             Body Position.
• The ECM measures the MAP signal to determine intake manifold (boost) pressure.

NOTE: Washing a hot engine can have negative effects on this sensor!
NOTE: The 6.0L engine used a remote mounted MAP sensor.
NOTE: Pay special attention to differentiating between the MAP sensor and the EP sensor, do not interchange them!

 

10. August 2021 by samuel
Categories: 6.4L Power Stroke | Comments Off on 6.4L Power Stroke Electrical – MAP (Manifold Absolute Pressure)

6.4L Power Stroke Electrical – MAF (Mass Air Flow)

• The Mass Air Flow (MAF) sensor uses a hot wire sensing element to measure the amount of air entering the engine.
Air passing over the hot wire causes it to cool. This hot wire is maintained at 200°C (392°F) above ambient                   temperature as measured by a constant cold wire.
• The current required to maintain the temperature of the hot wire is proportional to the mass air flow.
• The MAF sensor then outputs a frequency signal to the ECM proportional to the air mass.

 

10. August 2021 by samuel
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6.4L Power Stroke Electrical – FRP (Fuel Rail Pressure)

• The FRP sensor is a (3) wire variable capacitance sensor.
• The ECM supplies a 5 volt reference signal (Vref) which the FRP sensor uses to produce a linear
analog voltage that indicates pressure.
• The primary function of the FRP sensor is to provide a feedback signal to the ECM indicating the pressure of the         fuel in the fuel rail.
• The ECM monitors FRP as the engine is operating to modulate the PCV. This is a closed loop function which                 means the ECM continuously monitors and adjusts for ideal FRP determined by conditions such as load, speed,           and temperature.
• The ECM monitors the FRP signal to determine if the performance of the fuel system is satisfactory.

• During engine operation, if the ECM recognizes that the FRP signal is lower or higher than the value the PCV is           trying to achieve the ECM will set a Diagnostic Trouble Code (DTC) and illuminate the amber malfunction                     indicator lamp on the dash.
• The FRP signal to the ECM is one of the signals used to command the correct injection timing.
• This sensor is replaceable.

 

10. August 2021 by samuel
Categories: 6.4L Power Stroke | Comments Off on 6.4L Power Stroke Electrical – FRP (Fuel Rail Pressure)

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