Electronic Engine Control System Ford Crown Victoria II

GENERAL SPECIFICATIONS

GENERAL SPECIFICATIONS

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

Electronic Engine Controls

The electronic engine controls consist of the following

1. powertrain control module (PCM)
2. throttle position (TP) sensor
3. idle air control (IAC) valve
4. camshaft position (CMP) sensor
5. crankshaft position (CKP) sensor
6. mass air flow (MAF) sensor
7. intake air temperature (IAT) sensor
8. heated oxygen sensor (HO2S) - front
9. heated oxygen sensor (HO2S) - rear
10. cylinder head temperature (CHT) sensor

The PCM carries out the following functions

1. accepts input from various engine sensors to complete the required fuel flow rate necessary to maintain a prescribed air/fuel ratio throughout the entire operational range.
2. outputs a command to the fuel injectors to meter the appropriate quantity of fuel.
3. determines and compensates for the age of the vehicle and its uniqueness, also automatically senses and compensates for changes in altitude.

The TP sensor

1. sends the powertrain control module a signal indicating the throttle plate angle.
2. is the main input to the powertrain control module from the driver.

The IAC valve

1. controls bypass air around the throttle plate at low speeds.
2. is controlled by the powertrain control module.

The CMP sensor

1. sends the powertrain control module a signal indicating camshaft position used for fuel synchronization.

The CKP sensor

1. sends the powertrain control module a signal indicating crankshaft position.
2. is essential for calculating spark timing.
3. sends the powertrain control module signals to indicate engine rpm.

The MAF sensor

1. sends the powertrain control module a signal indicating fresh air flow rate of air entering the engine.

The IAT sensor

1. sends the powertrain control module a signal indicating the temperature of the air entering the engine.
2. resistance decreases as temperature increases.

The HO2S

1. has the ability to create a voltage signal dependent on exhaust oxygen content.
2. provides feedback information to the powertrain control module used to calculate fuel delivery.

The rear HO2S

1. monitors oxygen content after it flows through the catalytic converter.
2. provides a voltage to the powertrain control module used to calculate catalytic converter integrity.

The CHT sensor

1. is mounted into the wall of the cylinder head and is not connected to any coolant passages.
2. sends a signal to the powertrain control module indicating the cylinder head temperature. If the temperature exceeds approximately 121°C (250°F), the powertrain control module disables four fuel injectors at a time. The powertrain control module will alternate which fuel injectors are disabled every 32 engine cycles. The four cylinders that are not being fuel injected act as air pumps to aid in cooling the engine. If the temperature exceeds approximately 166°C (330°F), the powertrain control module disables all of the fuel injectors until the engine temperature drops below approximately 154°C (310°F).
3. If the engine reaches critical temperature, the following happens: The coolant temperature gauge pointer will read fully hot at approximately 121°C (250°F).

Refer to INTRODUCTION - CNG, FLEX-FUEL & GASOLINE .

Scheme 11

1. Disconnect the battery ground cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/ford/crown-victoria/ii-1997-2011/remont/charging-system/#battery-mounting-and-cables) .
2. Remove the camshaft position (CMP) sensor. Disconnect the electrical connector. Remove the bolt and the sensor.
3. To install, reverse the removal procedure.

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Scheme 16

1. Disconnect the battery ground cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/ford/crown-victoria/ii-1997-2011/remont/charging-system/#battery-mounting-and-cables) .
2. Remove the drive belt from the A/C compressor pulley. For additional information, refer to «SPECIFICATIONS & DRIVE BELT ROUTING»(/ford/crown-victoria/ii-1997-2011/remont/accessory-drive-belts/#cooling-system-specifications-drive-belt-routing) .
3. Disconnect the A/C compressor field coil electrical connector.
4. Raise and support the vehicle. For additional information, refer to «JACKING & LIFTING»(/ford/crown-victoria/ii-1997-2011/remont/hoistjack/#jacking-lifting) .
5. Disconnect the crankshaft position (CKP) sensor electrical connector.
6. Remove the nut and detach the wiring harness clips.
7. Loosen the bolts enough to slide the compressor down one inch, allowing access for CKP sensor removal.
8. Remove the CKP sensor bolt and the sensor.
9. To install, reverse the removal procedure.

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Scheme 21

1. Disconnect the battery ground cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/ford/crown-victoria/ii-1997-2011/remont/charging-system/#battery-mounting-and-cables) .
2. Loosen the bolt and remove the powertrain control module (PCM) electrical connector.
3. Remove the PCM cover nuts.
4. Remove the PCM cover.
5. Remove the under dash sight cover.
6. Remove the PCM.
7. To install, reverse the removal procedure.

Scheme 22

1. Disconnect the battery ground cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/ford/crown-victoria/ii-1997-2011/remont/charging-system/#battery-mounting-and-cables) .
2. Remove the engine appearance cover.
3. Remove the throttle position (TP) sensor. Disconnect the electrical connector. Remove the sensor.
4. To install, reverse the removal procedure.

Removal & Installation

Note. RH shown, LH similar.

Scheme 23

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Scheme 25

1. Disconnect the battery ground cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/ford/crown-victoria/ii-1997-2011/remont/charging-system/#battery-mounting-and-cables) .
2. Disconnect the idle air control (IAC) sensor and the throttle position (TP) sensor electrical connectors.
3. Remove the bolts and the IAC sensor.
4. Remove the bolts and the TP sensor.
5. To install, reverse the removal procedure.

Scheme 26

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Scheme 28

1. Disconnect the battery ground cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/ford/crown-victoria/ii-1997-2011/remont/charging-system/#battery-mounting-and-cables) .
2. Remove the engine appearance cover.
3. Disconnect the idle air control (IAC) valve electrical connector.
4. Remove the IAC valve hose.
5. Remove the IAC valve.
6. To install, reverse the removal procedure.

Note. RH shown, LH similar.

Scheme 29

Scheme 30

1. Disconnect the battery ground cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/ford/crown-victoria/ii-1997-2011/remont/charging-system/#battery-mounting-and-cables) .
2. Disconnect the idle air control (IAC) sensor electrical connector.
3. Remove the bolts and the IAC sensor.
4. To install, reverse the removal procedure.

Scheme 31

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Scheme 33

1. Disconnect the battery ground cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/ford/crown-victoria/ii-1997-2011/remont/charging-system/#battery-mounting-and-cables) .
2. Disconnect the mass air flow (MAF) sensor electrical connector.
3. Disconnect the air cleaner outlet tube.
4. Remove the four bolts and the MAF sensor.
5. Disconnect the MAF sensor electrical connector.
6. Remove the two screws and the MAF sensor.
7. To install, reverse the removal procedure.

Scheme 34

MATERIAL SPECIFICATION

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Scheme 37

1. Disconnect the battery ground cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/ford/crown-victoria/ii-1997-2011/remont/charging-system/#battery-mounting-and-cables) .
2. Raise and support the vehicle. For additional information, refer to «JACKING & LIFTING»(/ford/crown-victoria/ii-1997-2011/remont/hoistjack/#jacking-lifting) .
3. Disconnect the right side heated oxygen sensor (HO2S) electrical connector.
4. Disconnect the left side HO2S electrical connector.
5. Using the special tool, remove the HO2S.
6. To install, reverse the removal procedure. Apply a light coat of lubricant to the threads of the heated oxygen sensors.

Scheme 38

MATERIAL SPECIFICATION

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Scheme 40

1. Disconnect the battery ground cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/ford/crown-victoria/ii-1997-2011/remont/charging-system/#battery-mounting-and-cables) .
2. Raise and support the vehicle. For additional information, refer to «JACKING & LIFTING»(/ford/crown-victoria/ii-1997-2011/remont/hoistjack/#jacking-lifting) .
3. Disconnect the heated oxygen sensor (HO2S) electrical connector.
4. Using the special tool, remove the HO2S.
5. To install, reverse the removal procedure. Apply a light coat of lubricant to the threads of the heated oxygen sensors.

Scheme 41

Scheme 42

1. Remove the intake manifold. For additional information, refer to «ENGINE 4.6L (2V)»(/ford/crown-victoria/ii-1997-2011/remont/mechanical/#engine-46l-2v) or «ENGINE 4.6L (4V)»(ref-209994) .
2. Disconnect the cylinder head temperature (CHT) sensor electrical connector.
3. Remove the CHT sensor.
4. To install, reverse the removal procedure.

Engine Coolant Temperature (ECT) Sensor -4.6L (4V)

MATERIAL SPECIFICATION

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1. Drain the cooling system. For additional information, refer to «ENGINE COOLING»(/ford/crown-victoria/ii-1997-2011/remont/cooling-system-mechanical/#engine-cooling-system) .
2. Disconnect the engine coolant temperature (ECT) sensor electrical connector.
3. Remove the ECT sensor.
4. To install, reverse the removal procedure. Apply sealant to the ECT sensor threads.
5. Fill and bleed the cooling system. for additional information, refer to «ENGINE COOLING»(/ford/crown-victoria/ii-1997-2011/remont/cooling-system-mechanical/#engine-cooling-system) .

See also:
• INTRODUCTION - CNG, FLEX-FUEL & GASOLINE
• BATTERY, MOUNTING AND CABLES
• SPECIFICATIONS & DRIVE BELT ROUTING
• JACKING & LIFTING
• ENGINE 4.6L (2V)
• ENGINE COOLING