Ram 1500, 2500, 3500, 2WD and 4WD, 2001-2005

Throttle Body

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Removal & Installation



A (factory adjusted) set screw is used to mechanically limit the position of the throttle body throttle plate. Never attempt to adjust the engine idle speed using this screw. All idle speed functions are controlled by the Powertrain Control Module (PCM).

  1. Remove the engine cover.
  2.  
  3. Remove the air cleaner.
  4.  
  5. Disconnect the throttle body electrical connectors at Manifold Absolute Pressure (MAP) sensor, Idle Air Control (IAC) motor and Throttle Position Sensor (TPS).

    Click image to see an enlarged view

    Fig. Location of the MAP sensor (1), IAC motor (2) and TPS (3) electrical connectors

    Location of the MAP sensor (1), IAC motor (2) and TPS (3) electrical connectors
  6.  
  7. Remove vacuum line at throttle body.
  8.  
  9. Remove all control cables from throttle body (lever) arm.
  10.  
  11. Remove four throttle body mounting bolts.

    Click image to see an enlarged view

    Fig. Remove the mounting bolts (1) from the throttle body (2)

    Remove the mounting bolts (1) from the throttle body (2)
  12.  
  13. Remove throttle body from intake manifold.
  14.  
  15. Discard old throttle body-to-intake manifold gasket.
  16.  
  17. Clean the mating surfaces of the throttle body and the intake manifold.
  18.  

To install:

  1. Install a new throttle body-to-intake manifold gasket.
  2.  
  3. Install the throttle body to intake manifold. Secure with the four mounting bolts and torque to 17 ft. lbs. (23 Nm).
  4.  
  5. Install control cables.
  6.  
  7. Connect the vacuum line to throttle body.
  8.  
  9. Attach the electrical connectors.
  10.  
  11. Install the air cleaner.
  12.  
  13. Install the engine cover.
  14.  

3.7L Engine

A (factory adjusted) set screw is used to mechanically limit the position of the throttle body throttle plate. Never attempt to adjust the engine idle speed using this screw. All idle speed functions are controlled by the Powertrain Control Module (PCM).

  1. Remove air cleaner tube at throttle body.
  2.  
  3. Disconnect throttle body electrical connectors at Idle Air Control (IAC) motor and Throttle Position Sensor (TPS).
  4.  
  5. Remove all control cables from throttle body (lever) arm.
  6.  
  7. Disconnect necessary vacuum lines at throttle body.
  8.  
  9. Remove 3 throttle body mounting bolts.
  10.  
  11. Remove throttle body from intake manifold.
  12.  
  13. Check condition of old throttle body-to-intake manifold O-ring. Replace as necessary.
  14.  

To install:

  1. Clean mating surfaces of throttle body and intake manifold.
  2.  
  3. Install throttle body-to-intake manifold O-ring.
  4.  
  5. Install throttle body to intake manifold.
  6.  
  7. Install three mounting bolts. Tighten bolts to 105 inch lbs. (12 Nm).
  8.  
  9. Install control cables.
  10.  
  11. Install electrical connectors.
  12.  
  13. Install necessary vacuum lines.
  14.  
  15. Install air plenum.
  16.  

3.9L, 5.2L & 5.9L Engines

A (factory adjusted) set screw is used to mechanically limit the position of the throttle body throttle plate. Never attempt to adjust the engine idle speed using this screw. All idle speed functions are controlled by the Powertrain Control Module (PCM).

  1. Remove the air cleaner.
  2.  
  3. Disconnect throttle body electrical connectors at Manifold Absolute Pressure (MAP) sensor, Idle Air Control (IAC) motor and Throttle Position Sensor (TPS).
  4.  
  5. Remove vacuum line at throttle body.
  6.  
  7. Remove all control cables from throttle body (lever) arm.
  8.  
  9. Remove four throttle body mounting bolts.
  10.  
  11. Remove throttle body from intake manifold.
  12.  
  13. Discard old throttle body-to-intake manifold gasket.
  14.  

To install:

  1. Clean the mating surfaces of the throttle body and the intake manifold.
  2.  
  3. Install new throttle body-to-intake manifold gasket.
  4.  
  5. Install throttle body to intake manifold.
  6.  
  7. Install four mounting bolts. Tighten the bolts to 17 ft. lbs. (23 Nm).
  8.  
  9. Install control cables.
  10.  
  11. Install vacuum line to throttle body.
  12.  
  13. Install electrical connectors.
  14.  
  15. Install air cleaner.
  16.  

4.7L Engine
  1. Remove air duct and air resonator box at throttle body.
  2.  
  3. Disconnect throttle body electrical connectors at Idle Air Control (IAC) motor and Throttle Position Sensor (TPS).
  4.  
  5. Remove vacuum line at throttle body.
  6.  
  7. Remove all control cables from throttle body (lever) arm.
  8.  
  9. Remove three throttle body mounting bolts.
  10.  
  11. Remove the throttle body from the intake manifold.
  12.  
  13. Clean throttle body-to-intake manifold O-ring.
  14.  
  15. Clean mating surfaces of throttle body and intake manifold.

    Click image to see an enlarged view

    Fig. Exploded view of the throttle body bolts (1), throttle body (2), IAT sensor connector (3), IAC motor connector (4), TPS connector (5)-4.7L Engine

    Exploded view of the throttle body bolts (1), throttle body (2), IAT sensor connector (3), IAC motor connector (4), TPS connector (5)-4.7L Engine
  16.  

To install:

  1. Install throttle body to intake manifold by positioning throttle body to manifold alignment pins.
  2.  
  3. Install three mounting bolts and tighten to 105 inch lbs. (12 Nm).
  4.  
  5. Install control cables.
  6.  
  7. Connect the vacuum line to throttle body.
  8.  
  9. Attach the electrical connectors.
  10.  
  11. Install air plenum.
  12.  

5.7L Engine

WARNING
Do not use spray (carb) cleaners on any part of the throttle body. Do not apply silicone lubricants to any part of the throttle body.

  1. Remove air duct and air resonator box at throttle body.
  2.  
  3. Disconnect electrical connector from the throttle body.
  4.  
  5. Remove 4 throttle body mounting bolts.
  6.  
  7. Remove throttle body from intake manifold.
  8.  
  9. Check condition of throttle body O-ring.
  10.  
  11. If the throttle body has been changed, the following procedure must be performed:
    1. Disconnect negative battery cable from battery. Leave cable disconnected for approximately 90 seconds.
    2.  
    3. Reconnect cable to battery.
    4.  
    5. Turn ignition switch ON , but do not crank engine.
    6.  
    7. Leave ignition switch ON for a minimum of 10 seconds. This will allow PCM to learn throttle body electrical parameters.
    8.  

  12.  

To install:

  1. Clean and check condition of throttle body-to-intake manifold O-ring.
  2.  
  3. Clean mating surfaces of throttle body and intake manifold.
  4.  
  5. Install the throttle body to the intake manifold by positioning the throttle body to the manifold alignment pins.
  6.  
  7. Install 4 mounting bolts and tighten to 105 inch lbs. (12 Nm).
  8.  
  9. Attach the electrical connector.
  10.  
  11. Install the air plenum.
  12.  
  13. If the throttle body has been changed, the following procedure must be performed:
    1. Disconnect negative battery cable from battery. Leave cable disconnected for approximately 90 seconds.
    2.  
    3. Reconnect cable to battery.
    4.  
    5. Turn ignition switch ON , but do not crank engine.
    6.  
    7. Leave ignition switch ON for a minimum of 10 seconds. This will allow PCM to learn throttle body electrical parameters.
    8.  

  14.  

8.0L Engine

A (factory adjusted) set screw is used to mechanically limit the position of the throttle body throttle plate. Never attempt to adjust the engine idle speed using this screw. All idle speed functions are controlled by the Powertrain Control Module (PCM).

  1. Remove the air cleaner cover.
  2.  
  3. Remove the 4 air cleaner housing mounting nuts and remove housing from throttle body.
  4.  
  5. Disconnect throttle body electrical connectors at the Idle Air Control (IAC) motor and Throttle Position Sensor (TPS).
  6.  
  7. Remove all control cables from throttle body (lever) arm.
  8.  
  9. Remove four throttle body mounting nuts.
  10.  
  11. Remove throttle body from intake manifold.
  12.  
  13. Discard old throttle body-to-intake manifold gasket.
  14.  

To install:

  1. Clean the mating surfaces of the throttle body and the intake manifold.
  2.  
  3. Install new throttle body-to-intake manifold gasket.
  4.  
  5. Install throttle body to intake manifold. Install four mounting nuts. Tighten nuts to 16 ft. lbs. (22 Nm).
  6.  
  7. Install control cables.
  8.  
  9. Install electrical connectors.
  10.  
  11. Install air cleaner housing to throttle body.
  12.  
  13. Install 4 air cleaner housing mounting nuts. Tighten the nuts to 96 inch lbs. (11 Nm).
  14.  
  15. Install air cleaner housing cover.
  16.  

 
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