Miata 1990-1997

Engine

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Removal & Installation



Specific to:

Mazda Miata 1995-1997



Click image to see an enlarged view

Fig. The engine and transmission assemblies

  1. Properly relieve the fuel system pressure.
  2.  
  3. Raise the trunk lid and disconnect the negative battery cable. Remove the fresh air duct and the air cleaner/air flow meter assembly.

    Click image to see an enlarged view

    Fig. Step One in removing the engine-s components.

  4.  
  5. Remove the transmission.
  6.  
  7. Disconnect the accelerator cable from the throttle body.
  8.  
  9. Raise and safely support the vehicle and remove the undercover. Drain the engine oil and the coolant.
  10.  
  11. Disconnect the radiator hoses, including the coolant reservoir hose and the cooling fan electrical connector.

    Click image to see an enlarged view

    Fig. Step Two in removing the engine-s components.

  12.  
  13. On automatic transmission vehicles only, remove the oil cooler hose.
  14.  
  15. Remove the radiator/cooling fan assembly.
  16.  
  17. Remove the accessory drive belts. Without disconnecting the hydraulic hoses, remove the power steering pump and secure it aside.

    Click image to see an enlarged view

    Fig. Step Three in removing the engine-s components.

  18.  
  19. Without disconnecting the refrigerant, remove the air conditioner compressor and secure it aside.
  20.  
  21. Label and disconnect the following electrical connectors: Steering pressure sensor, throttle position sensor, idle air control valve, heated oxygen sensor, ignition coil, crankshaft position sensor, ground, fuel injector, alternator, oil pressure sensor and the starter.
  22.  
  23. Label and disconnect the following hoses: Brake vacuum, fuel, purge control vacuum, cruise control vacuum, water inlet and heater.

    Click image to see an enlarged view

    Fig. Step Four in removing the engine-s components.

  24.  
  25. Disconnect the exhaust pipe from the exhaust manifold.
  26.  
  27. Install suitable lifting equipment onto the engine and make sure all hoses, wires and cables are disconnected.
  28.  
  29. Remove the engine mount nuts, and lift the engine from the vehicle.
  30.  

To install:

  1. Carefully and slowly install the engine assembly into the vehicle. Tilt the engine downward, and align the engine mounts with the crossmember mounting holes. Tighten the mount nuts to 42-57 ft. lbs. (57-78 Nm).
  2.  
  3. Use a new gasket and attach the exhaust pipe to the manifold. Torque the nuts to 34 ft. lbs. (46 Nm).
  4.  
  5. Install the following hoses: Brake vacuum, fuel, purge control vacuum, cruise control vacuum, water inlet and heater.
  6.  
  7. Install the following electrical connectors: Steering pressure sensor, throttle position sensor, idle air control valve, heated oxygen sensor, ignition coil, crankshaft position sensor, ground, fuel injector, alternator, oil pressure sensor and the starter.
  8.  
  9. Install the air conditioner compressor and power steering pump. Install and adjust the drive belts.
  10.  
  11. Install the radiator and fans, and connect all cooling system hoses.
  12.  
  13. Connect and adjust the accelerator cable as required.
  14.  
  15. Install the air cleaner and air flow meter assembly.
  16.  
  17. Install the transmission.
  18.  
  19. Check to make sure all wiring and hoses are properly connected. Fill and bleed the cooling system. Fill the engine and transmission with the proper type and quantity of oil.
  20.  
  21. Connect the negative battery cable, start the engine and bring to normal operating temperature. Check for leaks.
  22.  
  23. Check the ignition timing and idle speed. Check all fluid levels.
  24.  

Specific to:

Mazda Miata 1990-1994



Click image to see an enlarged view

Fig. The engine and transmission assemblies

  1. Mark the position of the hood on its hinges and remove the hood.
  2.  
  3. Properly relieve the fuel system pressure.
  4.  
  5. Raise the trunk lid and disconnect the negative battery cable. Remove the fresh air duct and the air cleaner/air flow meter assembly.
  6.  
  7. Disconnect the accelerator cable from the throttle body.
  8.  
  9. Raise and safely support the vehicle and remove the undercover. Drain the engine and transmission oil and the coolant.

    Click image to see an enlarged view

    Fig. Step One in removing the engine-s components.

  10.  
  11. Disconnect the radiator hoses and the cooling fan electrical connector. Remove the radiator/cooling fans assembly.
  12.  
  13. Remove the accessory drive belts. Without disconnecting the hydraulic hoses, remove the power steering pump and secure it aside.
  14.  
  15. Without disconnecting the refrigerant, remove the air conditioner compressor and secure it aside.
  16.  
  17. Label and disconnect the wiring and all vacuum, fuel and coolant hoses.
  18.  
  19. Disconnect the exhaust pipe from the exhaust manifold.
  20.  
  21. Without disconnecting the hydraulic line, remove the clutch slave cylinder.
  22.  
  23. Remove the center console and the shifter assembly.
  24.  
  25. Disconnect the transmission electrical connectors and the speedometer cable.
  26.  
  27. Mark the position of the driveshaft on the differential flange and remove the bolts. Slide the driveshaft yoke from the transmission and remove the driveshaft.

    Click image to see an enlarged view

    Fig. Step Two in removing the engine-s components.

  28.  
  29. The frame member between the transmission and differential must be removed. With the transmission properly supported, remove the bolts at both ends and remove the frame.
    NOTE
    Do not remove the upper frame-to-differential spacers from the frame. If they are removed, the entire frame must be replaced as a unit.

  30.  
  31. Install suitable lifting equipment onto the engine and make sure all hoses, wires and cables are disconnected.
  32.  
  33. Remove the engine mount nuts and lift the engine and transmission as an assembly from the vehicle.

    Click image to see an enlarged view

    Fig. Step Three in removing the engine-s components.



    Click image to see an enlarged view

    Fig. Step Four in removing the engine-s components.

  34.  
  35. Remove the starter.
  36.  
  37. If equipped with automatic transmission, remove the torque converter-to-flywheel bolts.
  38.  
  39. Remove the bolts to separate the transmission from the engine.
  40.  

To install:

  1. Assemble the engine to the transmission and torque the bolts to 66 ft. lbs. (89 Nm). If equipped with automatic transmission, install the torque converter-to-flywheel bolts and torque to 40 ft. lbs. (54 Nm).
  2.  
  3. Install the starter and torque the bolts to 38 ft. lbs. (52 Nm).
  4.  
  5. Carefully install the engine and transmission assembly into the vehicle. Start but do not tighten the mount nuts.
  6.  
  7. Install the transmission-to-differential frame and torque the bolts to 91 ft. lbs. (124 Nm). Torque the engine mount nuts to 58 ft. lbs. (78 Nm).
  8.  
  9. Connect the transmission wiring and speedometer cable and install the driveshaft. Torque the driveshaft bolts to 22 ft. lbs. (30 Nm).
  10.  
  11. Use a new gasket and attach the exhaust pipe to the manifold. Torque the nuts to 34 ft. lbs. (46 Nm).
  12.  
  13. Install the clutch slave cylinder and torque bolts to 19 ft. lbs. (25 Nm).
  14.  
  15. Connect and adjust the shift linkage as required.
  16.  
  17. Install the air conditioner compressor and power steering pump. Install and adjust the drive belts.
  18.  
  19. Install the radiator and fans and connect all cooling system hoses.
  20.  
  21. Connect all wiring and hoses.
  22.  
  23. Connect and adjust the accelerator cable as required.
  24.  
  25. Install the air cleaner and air flow meter assembly.
  26.  
  27. Check to make sure all wiring and hoses are properly connected. Fill and bleed the cooling system. Fill the engine and transmission with the proper type and quantity of oil.
  28.  
  29. Connect the negative battery cable, start the engine and bring to normal operating temperature. Check for leaks.
  30.  
  31. Check the ignition timing and idle speed. Check all fluid levels.
  32.  

 
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