Engine Removal / Installation - 3.0L

WARNING: This page is about a different car, the 2007 Mazda B3000. However, it is still accessible from the selected car via links, so may be relevant.

With the vehicle in NEUTRAL, position it on a hoist. See LIFTING .
Drain the engine cooling system. See ENGINE COOLANT REPLACEMENT -- 3.0L .
Remove the hood.
Remove the upper intake manifold. See INTAKE MANIFOLD UPPER REMOVAL / INSTALLATION - 3.0L , .
Remove the air cleaner outlet tube. See AIR CLEANER OUTLET TUBE REMOVAL / INSTALLATION - 3.0L , .
NOTE:
- The fan clutch has left-hand threads.
Remove the fan clutch and the fan blade as an assembly. See COOLING FAN AND CLUTCH REMOVAL / INSTALLATION -- 3.0L .
Remove the drive belt. See DRIVE BELT REMOVAL / INSTALLATION - 3.0L , .
Remove the fan shroud.

Fig 1: Fan Shroud Bolts With Torque Specification
Courtesy of MAZDA MOTORS CORP.
Remove the radiator. See RADIATOR REMOVAL / INSTALLATION -- 3.0L .
Recover the A/C system. See A/C REFRIGERANT SYSTEM TESTS .
Disconnect the A/C manifold and tube assembly. See A/C MANIFOLD AND TUBE ASSEMBLY REMOVAL / INSTALLATION -- 3.0L .
Disconnect the heater hoses.

Fig 2: Locating Heater Hoses
Courtesy of MAZDA MOTORS CORP.
Disconnect the A/C manifold and tube assembly at the accumulator.

Fig 3: Locating A/C Manifold And Tube Assembly At Accumulator
Courtesy of MAZDA MOTORS CORP.
Remove the nut and position the suction/discharge line aside.

Fig 4: Suction/Discharge Line Bracket Nut With Torque Specifications
Courtesy of MAZDA MOTORS CORP.
Remove the nut and position the line aside.

Fig 5: Nut With Torque Specifications
Courtesy of MAZDA MOTORS CORP.
Disconnect the A/C compressor electrical connector and detach the wiring harness retainer.

Fig 6: Locating A/C Compressor Electrical Connector
Courtesy of MAZDA MOTORS CORP.
Remove the nuts and detach the ground wire and the wiring harness bracket.

Fig 7: Locating Ground Wire And Wiring Harness Bracket Nuts
Courtesy of MAZDA MOTORS CORP.

Tightening Torque: 10 Nm {89 ft-lbi}
Remove the accessory drive belt tensioner.

Fig 8: Locating Accessory Drive Belt Tensioner
Courtesy of MAZDA MOTORS CORP.

Tightening Torque: 27 Nm {20 ft-lfi}
Remove the stud bolts.

Fig 9: Locating Stud Bolts
Courtesy of MAZDA MOTORS CORP.

Tightening Torque: 47 Nm {35 ft-lbf}
Remove the bolt and position A/C compressor and A/C compressor mounting bracket aside as an assembly.

Fig 10: Locating A/C Compressor Mounting Bracket Bolts
Courtesy of MAZDA MOTORS CORP.
- Remove the bolts.
- Set the assembly aside.
Tightening Torque: 47 Nm {35 ft-lfi}
Remove the nut and position the ground cable aside.

Fig 11: Ground Cable Nut With Torque Specifications
Courtesy of MAZDA MOTORS CORP.
Disconnect the two in-line electrical connectors.

Fig 12: Locating Two In-Line Electrical Connectors
Courtesy of MAZDA MOTORS CORP.
Relieve the fuel system pressure. See FUEL PRESSURE RELIEF , .
Disconnect the fuel lines. See FUEL LINE AND VAPOR LINE QUICK DISCONNECT FITTINGS , .
Disconnect the PCM electrical connectors.

Fig 13: Locating PCM Electrical Connectors
Courtesy of MAZDA MOTORS CORP.
Remove the nut and detach the wiring harness retainer.

Fig 14: Locating Wiring Harness Retainer Nut
Courtesy of MAZDA MOTORS CORP.

Tightening Torque: 10 Nm {89 ft-lbi}
Remove the stud bolt and the PCM ground strap.

Fig 15: Locating Stud Bolt
Courtesy of MAZDA MOTORS CORP.

Tightening Torque: 10 Nm {89 ft-lbi}
Disconnect the generator electrical connectors, detach the wiring harness retainer and position aside.

Fig 16: Locating Generator Wiring Harness Retainer With Torque Specifications
Courtesy of MAZDA MOTORS CORP.
Disconnect both front heated oxygen sensors.

Fig 17: Locating Front Heated Oxygen Sensors
Courtesy of MAZDA MOTORS CORP.
Disconnect the vacuum line to the vacuum tank reservoir.

Fig 18: Locating Vacuum Hose
Courtesy of MAZDA MOTORS CORP.
Disconnect the mass air flow (MAF) sensor.

Fig 19: Locating Mass Airflow Sensor
Courtesy of MAZDA MOTORS CORP.
Raise the vehicle.
Remove the left heated oxygen sensor. See HEATED OXYGEN SENSOR (HO2S) REMOVAL / INSTALLATION , .

Fig 20: Locating Left Heated Oxygen Sensor
Courtesy of MAZDA MOTORS CORP.
Disconnect the dual converter Y pipe from both exhaust manifolds. See EXHAUST MANIFOLD RIGHT HAND REMOVAL / INSTALLATION - 3.0L , and EXHAUST MANIFOLD LEFT HAND REMOVAL / INSTALLATION - 3.0L .
Remove the starter motor and the starter grounding stud bolt. See STARTER MOTOR REMOVAL / INSTALLATION -- 3.0L .
Detach the wiring harness retain from the transmission crossmember and disconnect the electrical connector.

Fig 21: Locating Wiring Harness Retainer With Electrical Connector
Courtesy of MAZDA MOTORS CORP.

Vehicles equipped with an automatic transmission
Disconnect the RH catalyst monitor sensor electrical connector and remove the nut.

Fig 22: Locating Catalyst Monitor Sensor Electrical Connector And Nut
Courtesy of MAZDA MOTORS CORP.
- Route the wiring harness over the transmission.
Tightening Torque: 30 Nm {22 ft-lbf}
Detach the wiring harness retainer. Disconnect the transmission electrical connectors.

Fig 23: Locating Transmission Electrical Connectors
Courtesy of MAZDA MOTORS CORP.
Detach the wiring harness retainer. Disconnect the LH catalyst monitor sensor and transmission electrical connectors.

Fig 24: Locating Catalyst Monitor Sensor And Transmission Electrical Connectors
Courtesy of MAZDA MOTORS CORP.
NOTE:
- Mark one stud and the flexplate for installation reference.
Remove the torque converter nuts on automatic transmissions.

Fig 25: Torque Converter Nuts With Torque Specifications
Courtesy of MAZDA MOTORS CORP.
- Remove the access plate.
- Remove the four nuts.
Disconnect the wire pushpin retainers.

Fig 26: Locating Wire Pushpin Retainers
Courtesy of MAZDA MOTORS CORP.
Disconnect the knock sensor (KS) electrical connector.

Fig 27: Locating Knock Sensor (KS) Electrical Connector
Courtesy of MAZDA MOTORS CORP.
Remove the bolt.

Fig 28: Bolt With Torque Specifications
Courtesy of MAZDA MOTORS CORP.

Vehicles equipped with a manual transmission
Disconnect the RH catalyst monitor sensor electrical connector and remove the nut.

Fig 29: Locating Catalyst Monitor Sensor Electrical Connector And Nut
Courtesy of MAZDA MOTORS CORP.
- Route the wiring harness over the transmission.
  Tightening Torque: 30 Nm {22 ft-lfi}
Detach the wiring harness retainer. Disconnect the transmission electrical connector.

Fig 30: Locating Transmission Electrical Connector
Courtesy of MAZDA MOTORS CORP.
Detach the wiring harness retainers. Disconnect the LH catalyst monitor and transmission electrical connectors.

Fig 31: Locating Catalyst Monitor And Transmission Electrical Connectors
Courtesy of MAZDA MOTORS CORP.

All vehicles
Remove the nuts and position the fuel tube bracket aside.

Fig 32: Locating Fuel Tube Bracket Nuts
Courtesy of MAZDA MOTORS CORP.
- Make sure all the transmission electrical connectors and wiring harness retainers are disconnected and route the wiring harness to the engine.
  Tightening Torque: 30 Nm {22 ft-lbf}
Remove the eight transmission-to-engine bolts.

Fig 33: Transmission-To-Engine Bolts With Torque Specifications
Courtesy of MAZDA MOTORS CORP.
Lower the vehicle.
Attach engine lifting eyes SST .

Fig 34: Identifying Engine Lifting Eyes SST
Courtesy of MAZDA MOTORS CORP.
Remove the four nuts.

Fig 35: Nuts With Torque Specification
Courtesy of MAZDA MOTORS CORP.
Support the transmission.
Remove the engine from the vehicle.
To install, reverse the removal procedure.