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DESCRIPTION AND OPERATION
Electronic Engine Controls —
Cobra
Most of the Cobra engine electronic controls are similar to that of the non- supercharged 4.6L (2V)
engine. These components are as follows:
zCrankshaft position (CKP) sensor
z Throttle position (TP) sensor
z Idle air control (IAC) valve
z Mass air flow (MAF) sensor
z Heated oxygen sensors (HO2S)
z Engine coolant temperature (ECT) sensor
There are also three controls that are unique to the Cobra engine. These are as follows:
zIntegrated temperature and manifold absolute pressure (T- MAP) sensor
z Supercharger bypass vacuum solenoid
z Supercharger bypass vacuum solenoid — actuator
Supercharger Bypass Vacuum Solenoid and Actuator
The Supercharger bypass vacuum solenoid will bleed off boost under the following conditions:
zheavy engine misfire
z engine coolant over- temperature
z loss of intercooler fluid
z pump failure
This prevents damage that can occur if boost were allowed under these conditions. The solenoid is
located on the upper LH side of the engine. The solenoid uses engine vacuum to operate a actuator
and linkage that connects to the pressure bleed off valve. The actuator is located near the solenoid
and is connected to it by a vacuum line.
Integrated Temperature and Manifold Absolute Pressure (TMAP) Sensor
The TMAP sensor is located on the upper LH side of the engine and is used to measure current
manifold absolute pressure and manifold air charge temperature. SECTION 303-
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REMOVAL AND INSTALLATION
Temperature and Manifold Absolute Pressure (T-
MAP)
Sensor — Cobra
Removal and Installation 1. Disconnect the temperature manifold absolute pressure (T- MAP) sensor electrical connector.
2. Remove the bolts and the T- MAP sensor.
3. To install, reverse the removal procedure.
SECTION 303-
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REMOVAL AND INSTALLATION
Camshaft Position (CMP) Sensor —
3.8L
Removal 1. Disconnect the battery ground cable. For additional information, refer to Section 414 - 01 .
2. Remove the camshaft position (CMP) sensor. zDisconnect the connector.
z Remove the bolts and the sensor.
Installation 1. To install, reverse the removal procedure.
SECTION 303-
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REMOVAL AND INSTALLATION
Camshaft Position (CMP) Sensor —
4.6L
Removal and Installation 1. Disconnect the battery ground cable. For additional information, refer to Section 414 - 01 .
2. Remove the bolts and position aside the power steering pump reservoir.
3. Remove the camshaft position (CMP) sensor. zDisconnect the connector.
z Remove the bolt and the sensor.
4. To install, reverse the removal procedure.
SECTION 303-
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REMOVAL AND INSTALLATION
Crankshaft Position (CKP) Sensor —
3.8L
Removal 1. Disconnect the battery ground cable. For additional information, refer to Section 414 - 01 .
2. Remove the crankshaft position (CKP) sensor. zDisconnect the connector.
z Remove the bolts and the sensor.
Installation 1. To install, reverse the removal procedure.
SECTION 303-
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REMOVAL AND INSTALLATION
Crankshaft Position (CKP) Sensor —
4.6L
Removal 1. Disconnect the battery ground cable. For additional information, refer to Section 414 - 01 .
2. Remove the A/C compressor. For additional information, refer to Section 412 - 03 .
3. Remove the crankshaft position (CKP) sensor. zDisconnect the connector.
z Remove the bolt and remove the sensor.
Installation 1. To install, reverse the removal procedure.
SECTION 303-
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REMOVAL AND INSTALLATION
Throttle Position (TP) Sensor
Removal
NOTE:
The 3.8L engine is shown; the 4.6L (2V) is similar.
1. Disconnect the battery ground cable. For additional information, refer to Section 414 - 01 .
2. Remove the throttle position (TP) sensor. zDisconnect the connector.
z Remove the screws, and remove the sensor.
Installation 1. To install, reverse the removal procedure.
SECTION 303-
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REMOVAL AND INSTALLATION
Throttle Position (TP) Sensor —
Cobra
Removal and Installation 1. Disconnect the throttle position (TP) sensor electrical connector.
2. Remove the bolts and the TP sensor.
3. To install, reverse the removal procedure.
SECTION 303-
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