Nissan Car Altima & Sentra 1999-06

Engine

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Removal & Installation




NOTE
The engine and transaxle are removed as one unit from the underside of the vehicle.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Relieve the fuel system pressure.
  4.  
  5. Drain the coolant from the radiator and the engine block.
  6.  
  7. Drain the engine oil.
  8.  
  9. Remove or disconnect the following:

    Negative and positive battery cables
     
    Battery and tray from the vehicle
     
    Both front wheels
     
    Engine undercovers and the engine side covers
     
    Air cleaner assembly and air duct
     
    Vacuum hoses. Make sure to note the locations prior to disconnection them.
     
    Heater hoses from the engine
     
    Automatic transmission cooler hoses from the transaxle, if equipped
     
    Power steering hoses
     
    Fuel hoses from the engine
     
    Harness and wiring connections. Make sure to note the locations prior to disconnecting them.
     
    Throttle cable and the cruise control cable
     
    Control cable, if equipped with an automatic transmission
     
    Cooling fans, radiator and the recovery tank
     
    Front halfshafts from the vehicle
     
    Front exhaust pipe
     
    Control rod and support rod from the transaxle, 1.6L engine only
     
    Starter motor and intake manifold support brackets
     
    Engine drive belts
     
    Alternator and adjusting brackets
     
    Power steering pump and A/C compressor. It is not necessary to disconnect the lines.
     
    Cylinder head front mounting bracket, 1.6L engine only
     

  10.  
  11. Position a transmission jack under the transaxle and support the engine with engine slinger.

    Center crossmember
     
    Front stabilizer bar, if necessary
     
    Engine mounting bolts from both sides of the engine
     

  12.  
  13. Slowly lower the jacking devices and remove the engine and transaxle from the vehicle.
  14.  

To install:

  1. Install or connect the following:

    Engine and transaxle assembly
     
    Mounting bolts to both sides of the engine and torque the bolts to 44 ft. lbs. (60 Nm)
     

  2.  
  3. For vehicles with manual transaxles, adjust the height of the mounting bracket (buffer rod). The distance between the 2 through-bolts should be 2.13-2.20 in. (54-56mm).

    Click image to see an enlarged view

    Fig. Height adjustment of the buffer rod-Sentra with 1.6L engine



    Click image to see an enlarged view

    Fig. Height adjustment of the buffer rod for manual transmission vehicles-2.0L engine



    Center crossmember and torque the bolts to 40 ft. lbs. (54 Nm)
     

  4.  
  5. Remove the engine support jacks and engine slinger.
  6.  
  7. Install or connect the following:

    Cylinder head front mounting bracket, 1.6L engine only
     
    A/C compressor and power steering pump
     
    Alternator and brackets
     
    Starter motor and intake manifold support bracket
     
    Control and support rod, 1.6L engine only. Torque the control rod bolt to 10-13 ft. lbs. (14-18 Nm) and the support rod bolt to 26-35 ft. lbs. (35-47 Nm).
     
    Front exhaust pipe
     
    Drive belts
     
    Both front halfshafts
     
    Radiator, cooling fans and recovery tank
     
    Control cable, automatic transmissions only
     
    Throttle and cruise control cables, if equipped
     
    Wiring harness and electrical connections
     
    Power steering hoses and fuel line
     
    Transmission cooler lines, if equipped
     
    Vacuum hoses
     
    Air cleaner assembly
     
    Engine side and under covers
     
    Both front wheels
     
    Battery tray and battery
     
    Both battery cables
     

  8.  
  9. Fill the engine with clean oil.
  10.  
  11. Fill the cooling system.
  12.  
  13. Start the engine and check for leaks. Make all the necessary adjustments.
  14.  


NOTE
The engine and transaxle are removed as one unit from the underside of the vehicle.

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Relieve the fuel system pressure.
  4.  
  5. Drain the coolant from the radiator and the engine block.
  6.  
  7. Drain the engine oil.
  8.  
  9. Remove or disconnect the following:

    Negative and positive battery cables
     
    Battery and tray from the vehicle
     
    Both front wheels
     
    Engine undercovers and the engine side covers
     
    Air cleaner assembly and air duct
     
    Vacuum hoses. Make sure to note the locations prior to disconnection them.
     
    Heater hoses from the engine
     
    Automatic transmission cooler hoses from the transaxle, if equipped
     
    Power steering hoses
     
    Fuel hoses from the engine
     
    Harness and wiring connections. Make sure to note the locations prior to disconnecting them.
     
    Throttle cable and the cruise control cable
     
    Control cable, if equipped with an automatic transmission
     
    Cooling fans, radiator and the recovery tank
     
    Front halfshafts from the vehicle
     
    Front exhaust pipe
     
    Starter motor and intake manifold support brackets
     
    Engine drive belts
     
    Alternator and adjusting brackets
     
    Power steering pump and A/C compressor. It is not necessary to disconnect the lines.
     

  10.  
  11. Position a transmission jack under the transaxle and support the engine with engine slinger.

    Center crossmember
     
    Front stabilizer bar, if necessary
     
    Engine mounting bolts from both sides of the engine
     

  12.  
  13. Slowly lower the jacking devices and remove the engine and transaxle from the vehicle.
  14.  

To install:

  1. Install or connect the following:

    Engine and transaxle assembly
     
    Mounting bolts to both sides of the engine and torque the bolts to 44 ft. lbs. (60 Nm)
     

  2.  
  3. For vehicles with manual transaxles, adjust the height of the mounting bracket (buffer rod). The distance between the 2 through-bolts should be 2.13-2.20 in. (54-56mm).
  4.  
  5. Install or connect the following:

    Center crossmember and torque the bolts to 40 ft. lbs. (54 Nm)
     

  6.  
  7. Remove the engine support jacks and engine slinger.
  8.  
  9. Install or connect the following:

    A/C compressor and power steering pump
     
    Alternator and brackets
     
    Starter motor and intake manifold support bracket
     
    Front exhaust pipe
     
    Drive belts
     
    Both front halfshafts
     
    Radiator, cooling fans and recovery tank
     
    Control cable, automatic transmissions only
     
    Throttle and cruise control cables, if equipped
     
    Wiring harness and electrical connections
     
    Power steering hoses and fuel line
     
    Transmission cooler lines, if equipped
     
    Vacuum hoses
     
    Air cleaner assembly
     
    Engine side and under covers
     
    Both front wheels
     
    Battery tray and battery
     
    Both battery cables
     

  10.  
  11. Fill the engine with clean oil.
  12.  
  13. Fill the cooling system.
  14.  
  15. Start the engine and check for leaks. Make all the necessary adjustments.
  16.  


NOTE
The engine and transaxle must be removed as a single unit. The engine and transaxle are removed from under the vehicle.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Release fuel system pressure.
  4.  
  5. Drain the cooling system.
  6.  
  7. Drain the engine oil.
  8.  
  9. Remove or disconnect the following:

    Battery cables and the battery tray
     
    Air cleaner assembly
     
    Both front wheels
     
    Engine under cover and engine hood
     
    Cooler lines from the radiator, if equipped with an automatic transaxle
     
    Upper and lower hoses from the radiator
     
    Radiator assembly
     
    Heater hoses from the engine
     
    Throttle cable and cruise control cable, if equipped
     
    Fuel feed and return hoses
     
    All the necessary vacuum hoses and electrical connectors. Label all wires and hoses before disconnecting them.
     
    Wiring from starter motor
     
    Slave cylinder from the transaxle, if equipped. It is not necessary to disconnect the hydraulic hose.
     
    Engine drive belts. Be sure to mark belts for reinstallation.
     
    Alternator, A/C compressor and the power steering pump
     
    Both halfshafts from the transaxle and support the engine with slinger and support the transaxle with proper jack
     
    Left and right engine mounting through-bolts
     
    Crossmember
     
    Front and rear engine mounts
     

  10.  
  11. Lower the transaxle and engine assembly from the vehicle.
    NOTE
    The engine and transaxle assembly should be removed through the bottom of the vehicle. Do not attempt to remove the assembly from above.

  12.  

To install:

  1. Raise the transaxle and engine assembly to the vehicle.
  2.  
  3. Install or connect the following:

    Front and rear engine mounts. Torque the mounting bolts to 55 ft. lbs. (75 Nm).
     
    Crossmember and torque the bolts to 57-72 ft. lbs. (77-98 Nm)
     
    Left and right engine mounting through bolts. Torque the bolts to 72 ft. lbs. (98 Nm).
     

  4.  
  5. Remove the engine and transaxle support jacks.

    Both halfshafts
     
    Power steering pump, A/C compressor and alternator
     
    Slave cylinder, if equipped
     
    Starter motor
     
    Drive belts
     
    Vacuum hoses and electrical connectors
     
    Fuel feed and return lines
     
    Throttle and cruise control cables, if equipped
     
    Radiator
     
    Heater and radiator hoses
     
    Cooler lines, if equipped
     
    Engine side and under covers
     
    Both front wheels
     
    Air cleaner assembly
     
    Battery tray and battery
     
    Both battery cables
     
    Hood
     

  6.  
  7. Fill the cooling system.
  8.  
  9. Fill the engine with clean oil.
  10.  
  11. Start the vehicle, check for leaks and repair if necessary.
  12.  

 
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