Honda Prelude Accord Civic S2000 2001-2006

Exhaust Manifold

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Removal & Installation



1.7L Engine
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Raise and support the front of the vehicle and block the rear wheels.
  6.  
  7. Remove or disconnect the following:

    Front exhaust pipe from the exhaust manifold/catalytic converter
     
    Exhaust manifold support brackets if their bolts are accessible from this angle. The splash shield may be removed for better access.

    Click image to see an enlarged view

    Fig. Exploded view of the exhaust manifold-1.7L (D17A2) engine



    Click image to see an enlarged view

    Fig. Exploded view of the exhaust manifold -1.7L (D17A1, D17A6 & D17A7) engines

     

  8.  
  9. Lower the vehicle.
    NOTE
    Remove any rust or dirt from the exhaust manifold before removal. This will prevent dirt from entering the exhaust pipes.

  10.  
  11. Remove or disconnect the following:

    Manifold heat shield
     
    Heated Oxygen Sensor (HO 2 S) harness
     
    HO 2 S, using an oxygen sensor socket or box end wrench to unscrew the sensor from the manifold. Handle the sensor carefully.
     
    Exhaust manifold brackets
     
    Exhaust manifold and separate it from the cylinder head
     
    Exhaust manifold and gasket
     

  12.  

To install:


NOTE
Use new gaskets and self-locking nuts when installing the exhaust manifold.

  1. Clean the gasket mating surfaces of the manifold and cylinder head ports.
  2.  
  3. Install or connect the following:

    New gasket onto the cylinder head
     
    New gaskets onto the exhaust pipe flange
     
    Exhaust manifold. Apply anti-seize paste to the studs. Tighten the self-locking nuts to 23 ft. lbs. (32 Nm) in a crisscross pattern starting in the center of the manifold and working outward.
     
    Manifold brackets and tighten their bolts to 33 ft. lbs. (45 Nm) for all other engines
     

  4.  
  5. Carefully coat only the threads of the oxygen sensor body with anti-seize paste. Don't get any anti-seize on the sensor probe.
  6.  
  7. Install or connect the following:

    HO 2 S and carefully tighten it to 33 ft. lbs. (45 Nm)
     
    Heat shield and tighten the bolts to 16 ft. lbs. (22 Nm)
     
    HO 2 S connector
     

  8.  
  9. Raise and support the front of the vehicle and block the rear wheels.
  10.  
  11. Install or connect the following:

    Front exhaust pipe and the exhaust manifold/catalytic converter. Tighten the self-locking nuts to 40 ft. lbs. (55 Nm), if the converter is not attached to the manifold. If the converter is attached, tighten to 25 ft. lbs., (34 Nm). Install any manifold brackets and tighten them to 33 ft. lbs. (45 Nm).
     
    Splash shield if it was removed
     

  12.  
  13. Lower the vehicle and connect the negative battery cable.
  14.  
  15. Run the engine and check for exhaust leaks.
  16.  

2.0L Engine


Click image to see an enlarged view

Fig. Exploded view of the exhaust manifold-S2000 with 2.0L and 2.2L engines

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. On 2006 Civic, drain the cooling system and relieve the fuel system pressure.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable
     
    Catalytic converter
     
    Exhaust manifold heat shields
     
    Heated Oxygen (HO 2 S) sensor connector
     
    Exhaust manifold bracket
     
    Exhaust manifold
     

  6.  

To install:

  1. Installation is the reverse of the removal procedure.
  2.  
  3. As required, reprogram the power window control unit as follows.
  4.  
  5. Turn the ignition switch ON. Lower the window, all the way down. Open the driver-s side door.
  6.  
  7. Turn the ignition switch OFF. Push and hold the drivers window DOWN switch. Turn the ignition switch ON. Release the driver-s window DOWN switch. This must be done within five seconds.
  8.  
  9. Repeat the above step three more times. Wait one second.
  10.  
  11. Confirm that the AUTO UP and AUTO DOWN do not work. If they work repeat the procedure, paying close attention to the five second time limit
  12.  
  13. Move the driver-s window all the way down by holding the drivers window DOWN switch to the AUTO DOWN position.
  14.  
  15. Pull up and hold the driver-s window UP switch to the AUTO UP position until the window reaches the fully closed position. Hold the switch for one second.
  16.  
  17. Confirm that the power window master switch has been reset by using the driver-s window AUTO UP and DOWN function.
  18.  
  19. If the AUTO UP and DOWN feature is still not working, repeat the complete procedure, paying close attention to the five second time limit.
  20.  

2.0L Engines


Click image to see an enlarged view

Fig. Exploded view of the exhaust manifold-2.0L engine

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following: Negative battery cableCatalytic converterExhaust manifold heat shieldsHeated Oxygen (HO2S) sensor connectorExhaust manifold bracketExhaust manifold

    Negative battery cable
     
    Catalytic converter
     
    Exhaust manifold heat shields
     
    Heated Oxygen (HO2S) sensor connector
     
    Exhaust manifold bracket
     
    Exhaust manifold
     

  4.  

To install:

  1. Installation is the reverse of the removal procedure, while using the following torque values: Exhaust manifold nuts: 23 ft. lbs. (31 Nm)Exhaust manifold bracket bolts: 33 ft. lbs. (44 Nm)Heat shield bolts: 16 ft. lbs. (22 Nm)Catalytic converter bolts: 16 ft. lbs. (22 Nm)

    Exhaust manifold nuts: 23 ft. lbs. (31 Nm)
     
    Exhaust manifold bracket bolts: 33 ft. lbs. (44 Nm)
     
    Heat shield bolts: 16 ft. lbs. (22 Nm)
     
    Catalytic converter bolts: 16 ft. lbs. (22 Nm)
     

  2.  

2.2L And 2.3L Engines
  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following: Negative battery cable

    Negative battery cable
     

  4.  
  5. Safely raise and support the vehicle.
  6.  
  7. Remove or disconnect the following: Oxygen Sensor (O2S) connector, if it is located in the manifold.Exhaust manifold upper coverHeat insulator from the manifold, if equipped with air conditioning.Nuts attaching the exhaust manifold to the front exhaust pipe.Pipe from the manifold and discard the gasket. Support the pipe with wire; do not allow it to hang by itself.Exhaust manifold bracket(s) bolts and bracket(s).Exhaust manifold attaching nuts, using a crisscross pattern (starting from the center).Manifold and discard the gasket. Clean the manifold and cylinder head mating surfaces.Lower manifold cover from the manifold, if equipped.

    Oxygen Sensor (O2S) connector, if it is located in the manifold.
     
    Exhaust manifold upper cover
     
    Heat insulator from the manifold, if equipped with air conditioning.
     
    Nuts attaching the exhaust manifold to the front exhaust pipe.
     
    Pipe from the manifold and discard the gasket. Support the pipe with wire; do not allow it to hang by itself.
     
    Exhaust manifold bracket(s) bolts and bracket(s).
     
    Exhaust manifold attaching nuts, using a crisscross pattern (starting from the center).
     
    Manifold and discard the gasket. Clean the manifold and cylinder head mating surfaces.
     
    Lower manifold cover from the manifold, if equipped.
     

  8.  

To install:

  1. Install or connect the following: Lower manifold cover, if equipped, and tighten the attaching bolts to 16 ft. lbs. (22 Nm).New gasketExhaust manifold into position and support itNew nuts snug on the studsSupport bracket(s) below the manifold. Tighten the bracket(s) mounting bolts to 33 ft. lbs. (44 Nm).

    Lower manifold cover, if equipped, and tighten the attaching bolts to 16 ft. lbs. (22 Nm).
     
    New gasket
     
    Exhaust manifold into position and support it
     
    New nuts snug on the studs
     
    Support bracket(s) below the manifold. Tighten the bracket(s) mounting bolts to 33 ft. lbs. (44 Nm).
     

  2.  
  3. Starting with the manifold inner or center nuts, tighten the nuts in a crisscross pattern to the correct torque. The tension must be even across the entire face of the manifold if leaks are to be prevented. Tighten the nuts to 23 ft. lbs. (31 Nm).
  4.  
  5. Install or connect the following: Heat insulator to the manifold, if equipped with air conditioning. Tighten the attaching bolts to 84 inch lbs. (10 Nm) on Prelude models and 108 inch lbs. (12 Nm) on Accord models.Upper manifold cover and tighten the bolts to 16 ft. lbs. (22 Nm).Oxygen sensor connector, if detachedFront exhaust pipe using new gaskets and nuts. Tighten the exhaust pipe attaching nuts to 40 ft. lbs. (55 Nm).Negative battery cable and enter the radio security code.

    Heat insulator to the manifold, if equipped with air conditioning. Tighten the attaching bolts to 84 inch lbs. (10 Nm) on Prelude models and 108 inch lbs. (12 Nm) on Accord models.
     
    Upper manifold cover and tighten the bolts to 16 ft. lbs. (22 Nm).
     
    Oxygen sensor connector, if detached
     
    Front exhaust pipe using new gaskets and nuts. Tighten the exhaust pipe attaching nuts to 40 ft. lbs. (55 Nm).
     
    Negative battery cable and enter the radio security code.
     

  6.  
  7. Start the engine and check for exhaust leaks.
  8.  
  9. If equipped with 4WS, turn the steering wheel lock-to-lock to reset the 4WS control unit.
  10.  

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Remove or disconnect the following:

    Negative battery cable
     

  4.  
  5. Safely raise and support the vehicle.
  6.  
  7. Remove or disconnect the following:

    Oxygen Sensor (O 2 S) connector, if it is located in the manifold.
     
    Exhaust manifold upper cover
     
    Heat insulator from the manifold, if equipped with air conditioning.
     
    Nuts attaching the exhaust manifold to the front exhaust pipe.
     
    Pipe from the manifold and discard the gasket. Support the pipe with wire; do not allow it to hang by itself.
     
    Exhaust manifold bracket(s) bolts and bracket(s).
     
    Exhaust manifold attaching nuts, using a crisscross pattern (starting from the center).
     
    Manifold and discard the gasket. Clean the manifold and cylinder head mating surfaces.
     
    Lower manifold cover from the manifold, if equipped.
     

  8.  

To install:

  1. Use new gaskets when installing the exhaust manifold.
  2.  
  3. Clean all gasket mating surfaces.
  4.  
  5. Starting with the manifold inner or center nuts, tighten the nuts in a crisscross pattern to the correct torque. The tension must be even across the entire face of the manifold if leaks are to be prevented.
  6.  
  7. Continue the installation in the reverse order of the removal procedure.
  8.  
  9. As required, reprogram the power window control unit as follows.
  10.  
  11. Turn the ignition switch ON. Lower the window, all the way down. Open the driver-s side door.
  12.  
  13. Turn the ignition switch OFF. Push and hold the drivers window DOWN switch. Turn the ignition switch ON. Release the driver-s window DOWN switch. This must be done within five seconds.
  14.  
  15. Repeat the above step three more times. Wait one second.
  16.  
  17. Confirm that the AUTO UP and AUTO DOWN do not work. If they work repeat the procedure, paying close attention to the five second time limit
  18.  
  19. Move the driver-s window all the way down by holding the drivers window DOWN switch to the AUTO DOWN position.
  20.  
  21. Pull up and hold the driver-s window UP switch to the AUTO UP position until the window reaches the fully closed position. Hold the switch for one second.
  22.  
  23. Confirm that the power window master switch has been reset by using the driver-s window AUTO UP and DOWN function.
  24.  
  25. If the AUTO UP and DOWN feature is still not working, repeat the complete procedure, paying close attention to the five second time limit.
  26.  

2.4L Engine
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Raise and safely support the vehicle.
  4.  
  5. Remove or disconnect the following:

    VTEC solenoid valve
     
    Driveshaft heat shield
     
    Cover and exhaust manifold bracket
     
    Exhaust manifold
     

  6.  

To install:

  1. Clean the mounting surfaces. Be sure to use a new gasket.
  2.  
  3. Install or connect the following:

    Exhaust manifold. Tighten the nuts, in a crisscross pattern starting with the inner nut, to specification.
     
    Exhaust manifold bracket and cover
     
    Driveshaft heat shield
     
    VTEC solenoid valve

    Click image to see an enlarged view

    Fig. Exploded view of the exhaust manifold-2.4L engine

     

  4.  
  5. As required, reprogram the power window control unit as follows.
  6.  
  7. Turn the ignition switch ON. Lower the window, all the way down. Open the driver-s side door.
  8.  
  9. Turn the ignition switch OFF. Push and hold the drivers window DOWN switch. Turn the ignition switch ON. Release the driver-s window DOWN switch. This must be done within five seconds.
  10.  
  11. Repeat the above step three more times. Wait one second.
  12.  
  13. Confirm that the AUTO UP and AUTO DOWN do not work. If they work repeat the procedure, paying close attention to the five second time limit
  14.  
  15. Move the driver-s window all the way down by holding the drivers window DOWN switch to the AUTO DOWN position.
  16.  
  17. Pull up and hold the driver-s window UP switch to the AUTO UP position until the window reaches the fully closed position. Hold the switch for one second.
  18.  
  19. Confirm that the power window master switch has been reset by using the driver-s window AUTO UP and DOWN function.
  20.  
  21. If the AUTO UP and DOWN feature is still not working, repeat the complete procedure, paying close attention to the five second time limit.
  22.  

2.4L Engines
3.0L Engine
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Raise and safely support the vehicle.
  4.  
  5. Remove or disconnect the following:

    Engine undercover
     
    Exhaust pipe from the manifold to be removed
     

  6.  
  7. Lower the vehicle.
  8.  
  9. Remove or disconnect the following:

    Exhaust manifold heat shield
     
    Mounting nuts and the exhaust manifold.
     

  10.  

To install:

  1. Use new gaskets when installing the exhaust manifold.
  2.  
  3. Clean all gasket mating surfaces.
  4.  
  5. Install or connect the following:

    Exhaust manifold. Tighten the nuts to specification.
     
    Heat shield. Tighten the bolts to 16 ft. lbs. (22 Nm).
     

  6.  
  7. Raise the vehicle and connect the exhaust pipe to the manifold using a new gasket. Tighten the nuts to 40 ft. lbs. (54 Nm).

    Click image to see an enlarged view

    Fig. Exploded view of the exhaust manifold -3.0L engine

  8.  
  9. As required, reprogram the power window control unit as follows.
  10.  
  11. Turn the ignition switch ON. Lower the window, all the way down. Open the driver-s side door.
  12.  
  13. Turn the ignition switch OFF. Push and hold the drivers window DOWN switch. Turn the ignition switch ON. Release the driver-s window DOWN switch. This must be done within five seconds.
  14.  
  15. Repeat the above step three more times. Wait one second.
  16.  
  17. Confirm that the AUTO UP and AUTO DOWN do not work. If they work repeat the procedure, paying close attention to the five second time limit
  18.  
  19. Move the driver-s window all the way down by holding the drivers window DOWN switch to the AUTO DOWN position.
  20.  
  21. Pull up and hold the driver-s window UP switch to the AUTO UP position until the window reaches the fully closed position. Hold the switch for one second.
  22.  
  23. Confirm that the power window master switch has been reset by using the driver-s window AUTO UP and DOWN function.
  24.  
  25. If the AUTO UP and DOWN feature is still not working, repeat the complete procedure, paying close attention to the five second time limit.
  26.  

3.0L Engines
 
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