Dakota, 2001-2005

Intake Manifold

Print

Removal & Installation



2.5L Engines
  1. Before servicing the vehicle, please familiarize yourself with safety procedures.
  2.  
  3. Drain the cooling system.
  4.  
  5. Relieve the fuel system pressure.
  6.  
  7. Remove or disconnect the following:

    Negative battery cable
     
    Air intake hose and resonator
     
    Accessory drive belt
     
    Power steering pump and brackets
     
    Fuel line
     
    Accelerator cable
     
    Cruise control cable, if equipped
     
    Transmission cable, if equipped
     
    Throttle Position (TP) sensor connector
     
    Intake Air Temperature (IAT) sensor connector
     
    Idle Air Control (IAC) valve connector
     
    Engine Coolant Temperature (ECT) sensor connector
     
    Heated Oxygen (HO 2 S) sensor connector
     
    Fuel injector harness connectors
     
    Manifold Absolute Pressure (MAP) sensor vacuum line
     
    Closed Crankcase Ventilation (CCV) hose
     
    Intake manifold vacuum hoses
     
    Molded vacuum hose harness
     

  8.  
  9. Remove bolts 2-5. Loosen bolt No. 1 and nuts 6-7.
  10.  
  11. Remove the intake manifold.
  12.  

To install:

Click image to see an enlarged view

Fig. Manifold torque sequence-2.5L engine

  1. Install the intake manifold with a new gasket. Tighten the fasteners in sequence as follows:
    1. Step 1: Tighten bolt No. 1 to 30 ft. lbs. (41 Nm)
    2.  
    3. Step 2: Tighten bolts 2-5 to 23 ft. lbs. (31 Nm)
    4.  
    5. Step 3: Tighten nuts 6-7 to 17 ft. lbs. (23 Nm)
    6.  

  2.  
  3. Install or connect the following:

    Molded vacuum hose harness
     
    Intake manifold vacuum hoses
     
    CCV hose
     
    MAP sensor vacuum line
     
    Fuel injector harness connectors
     
    HO 2 S sensor connector
     
    ECT sensor connector
     
    IAC valve connector
     
    IAT sensor connector
     
    TP sensor connector
     
    Transmission cable, if equipped
     
    Cruise control cable, if equipped
     
    Accelerator cable
     
    Fuel line
     
    Power steering pump and brackets
     
    Accessory drive belt
     
    Air intake hose and resonator
     
    Negative battery cable
     

  4.  
  5. Fill the cooling system.
  6.  
  7. Start the engine and check for leaks.
  8.  

3.7L Engine
  1. Before servicing the vehicle, please familiarize yourself with safety procedures.
  2.  
  3. Drain the cooling system.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable
     
    Air cleaner assembly
     
    Accelerator cable
     
    Cruise control cable
     
    Manifold Absolute Pressure (MAP) sensor connector
     
    Intake Air Temperature (IAT) sensor connector
     
    Throttle Position (TP) sensor connector
     
    Idle Air Control (IAC) valve connector
     
    Engine Coolant Temperature (ECT) sensor
     
    Positive Crankcase Ventilation (PCV) valve and hose
     
    Canister purge vacuum line
     
    Brake booster vacuum line
     
    Cruise control servo hose
     
    Accessory drive belt
     
    Alternator
     
    A/C compressor
     
    Engine ground straps
     
    Ignition coil towers
     
    Oil dipstick tube
     
    Fuel line
     
    Fuel supply manifold
     
    Throttle body and mounting bracket
     
    Cowl seal
     
    Right engine lifting stud
     
    Intake manifold. Remove the fasteners in reverse of the tightening sequence.
     

  6.  

To install:

Click image to see an enlarged view

Fig. Intake manifold torque sequence-3.7L engine

  1. Install or connect the following:

    Intake manifold using new gaskets. Tighten the bolts, in sequence, to 105 inch lbs. (12 Nm).
     
    Right engine lifting stud
     
    Cowl seal
     
    Throttle body and mounting bracket
     
    Fuel supply manifold
     
    Fuel line
     
    Oil dipstick tube
     
    Ignition coil towers
     
    Engine ground straps
     
    A/C compressor
     
    Alternator
     
    Accessory drive belt
     
    Cruise control servo hose
     
    Brake booster vacuum line
     
    Canister purge vacuum line
     
    PCV valve and hose
     
    ECT sensor
     
    IAC valve connector
     
    TP sensor connector
     
    IAT sensor connector
     
    MAP sensor connector
     
    Cruise control cable
     
    Accelerator cable
     
    Air cleaner assembly
     
    Negative battery cable
     

  2.  
  3. Fill the cooling system.
  4.  
  5. Start the engine and check for leaks.
  6.  

3.9L Engine
  1. Before servicing the vehicle, please familiarize yourself with safety procedures.
  2.  
  3. Drain the cooling system.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable
     
    Accessory drive belt
     
    Alternator
     
    A/C compressor
     
    Alternator and A/C compressor bracket
     
    Air cleaner assembly
     
    Fuel line
     
    Fuel supply manifold
     
    Accelerator cable
     
    Transmission cable
     
    Cruise control cable
     
    Distributor cap and wires
     
    Ignition coil wiring
     
    Engine Coolant Temperature (ECT) sensor connector
     
    Heater hose
     
    Upper radiator hose
     
    Bypass hose
     
    Closed Crankcase Ventilation (CCV) system
     
    Evaporative emissions system
     
    Intake manifold
     

  6.  

To install:

Click image to see an enlarged view

Fig. Intake manifold torque sequence-3.9L engine

  1. Install the intake manifold. Use a new gasket and tighten the bolts in sequence as follows:
    1. Step 1: Bolts 1-2 to 72 inch lbs. (8 Nm) using 12 inch lb. (1.4 Nm) increments.
    2.  
    3. Step 2: Bolts 3-12 to 72 inch lbs. (8 Nm).
    4.  
    5. Step 3: Bolts 1-12 to 72 inch lbs. (8 Nm).
    6.  
    7. Step 4: Bolts 1-12 to 12 ft. lbs. (16 Nm).
    8.  
    9. Step 5: Bolts 1-12 to 12 ft. lbs. (16 Nm).
    10.  

  2.  
  3. Install or connect the following:

    Evaporative emissions system
     
    CCV system
     
    Bypass hose
     
    Upper radiator hose
     
    Heater hose
     
    ECT sensor connector
     
    Ignition coil wiring
     
    Distributor cap and wires
     
    Cruise control cable
     
    Transmission cable
     
    Accelerator cable
     
    Fuel supply manifold
     
    Fuel line
     
    Air cleaner assembly
     
    Alternator and A/C compressor bracket
     
    A/C compressor
     
    Alternator
     
    Accessory drive belt
     
    Negative battery cable
     

  4.  
  5. Fill the cooling system.
  6.  
  7. Start the engine and check for leaks.
  8.  

4.7L Engine
  1. Before servicing the vehicle, please familiarize yourself with safety procedures.
  2.  
  3. Drain the cooling system.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable
     
    Air cleaner assembly
     
    Accelerator cable
     
    Cruise control cable
     
    Manifold Absolute Pressure (MAP) sensor connector
     
    Intake Air Temperature (IAT) sensor connector
     
    Throttle Position (TP) sensor connector
     
    Idle Air Control (IAC) valve connector
     
    Engine Coolant Temperature (ECT) sensor
     
    Positive Crankcase Ventilation (PCV) valve and hose
     
    Canister purge vacuum line
     
    Brake booster vacuum line
     
    Cruise control servo hose
     
    Accessory drive belt
     
    Alternator
     
    A/C compressor
     
    Engine ground straps
     
    Ignition coil towers
     
    Oil dipstick tube
     
    Fuel line
     
    Fuel supply manifold
     
    Throttle body and mounting bracket
     
    Cowl seal
     
    Right engine lifting stud
     
    Intake manifold. Remove the fasteners in reverse of the tightening sequence.
     

  6.  

To install:

Click image to see an enlarged view

Fig. Intake manifold torque sequence-4.7L

  1. Install or connect the following:

    Intake manifold using new gaskets. Tighten the bolts, in sequence, to 105 inch lbs. (12 Nm).
     
    Right engine lifting stud
     
    Cowl seal
     
    Throttle body and mounting bracket
     
    Fuel supply manifold
     
    Fuel line
     
    Oil dipstick tube
     
    Ignition coil towers
     
    Engine ground straps
     
    A/C compressor
     
    Alternator
     
    Accessory drive belt
     
    Cruise control servo hose
     
    Brake booster vacuum line
     
    Canister purge vacuum line
     
    PCV valve and hose
     
    ECT sensor
     
    IAC valve connector
     
    TP sensor connector
     
    IAT sensor connector
     
    MAP sensor connector
     
    Cruise control cable
     
    Accelerator cable
     
    Air cleaner assembly
     
    Negative battery cable
     

  2.  
  3. Fill the cooling system.
  4.  
  5. Start the engine and check for leaks.
  6.  

5.9L Engines
  1. Before servicing the vehicle, please familiarize yourself with safety procedures.
  2.  
  3. Drain the cooling system.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable
     
    Accessory drive belt
     
    Alternator
     
    A/C compressor
     
    Alternator and A/C compressor bracket
     
    Air cleaner assembly
     
    Fuel line
     
    Fuel supply manifold
     
    Accelerator cable
     
    Transmission cable
     
    Cruise control cable
     
    Distributor cap and wires
     
    Ignition coil wiring
     
    Engine Coolant Temperature (ECT) sensor connector
     
    Heater hose
     
    Upper radiator hose
     
    Bypass hose
     
    Closed Crankcase Ventilation (CCV) system
     
    Evaporative emissions system
     
    Intake manifold
     

  6.  

To install:

Click image to see an enlarged view

Fig. Intake manifold torque sequence-5.9L engines

  1. Install the intake manifold. Use a new gasket and tighten the bolts in sequence as follows:
    1. Step 1: Bolts 1-4 to 72 inch lbs. (8 Nm) using 12 inch lb. (1.4 Nm) increments.
    2.  
    3. Step 2: Bolts 5-12 to 72 inch lbs. (8 Nm).
    4.  
    5. Step 3: Bolts 1-12 to 72 inch lbs. (8 Nm).
    6.  
    7. Step 4: Bolts 1-12 to 12 ft. lbs. (16 Nm).
    8.  
    9. Step 5: Bolts 1-12 to 12 ft. lbs. (16 Nm).
    10.  

  2.  
  3. Install or connect the following:

    Evaporative emissions system
     
    CCV system
     
    Bypass hose
     
    Upper radiator hose
     
    Heater hose
     
    ECT sensor connector
     
    Ignition coil wiring
     
    Distributor cap and wires
     
    Cruise control cable
     
    Transmission cable
     
    Accelerator cable
     
    Fuel supply manifold
     
    Fuel line
     
    Air cleaner assembly
     
    Alternator and A/C compressor bracket
     
    A/C compressor
     
    Alternator
     
    Accessory drive belt
     
    Negative battery cable
     

  4.  
  5. Fill the cooling system.
  6.  
  7. Start the engine and check for leaks.
  8.  

 
label.common.footer.alt.autozoneLogo