Intake Manifold Upper Removal/Installation - 3.0L

WARNING: This page is about a different car, the 2005 Mazda B3000. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery cable.
Remove the air cleaner outlet pipe. See AIR CLEANER OUTLET TUBE REMOVAL/INSTALLATION - 3.0L .

Fig 1: Removing Air Cleaner Outlet Pipe

Courtesy of MAZDA MOTORS CORP.

Remove the bolt and the splash shield.

Fig 2: Removing Splash Shield - With Torque Specifications
Courtesy of MAZDA MOTORS CORP.
Disconnect the accelerator cable, speed control cable and return spring.

Fig 3: Disconnecting Accelerator Cable, Speed Control Cable And Return Spring
Courtesy of MAZDA MOTORS CORP.
Disconnect the accelerator cable and speed control cable from the accelerator bracket.

Fig 4: Disconnecting Accelerator Cable And Speed Control Cable From Accelerator Bracket
Courtesy of MAZDA MOTORS CORP.
Disconnect the throttle position (TP) sensor and idle air control (IAC) valve electrical connectors.

Fig 5: Disconnecting Throttle Position (TP) Sensor And Idle Air Control (IAC) Valve Electrical Connectors
Courtesy of MAZDA MOTORS CORP.
Disconnect the two vacuum lines.

Fig 6: Disconnecting Vacuum Lines
Courtesy of MAZDA MOTORS CORP.
Detach the 42-pin wiring harness retainer from the stud bolt.

Fig 7: Detaching 42-Pin Wiring Harness Retainer From Stud Bolt
Courtesy of MAZDA MOTORS CORP.
Remove the nut and the stud, bolt.
- Position the 42-pin wiring harness and bracket aside.
  
  Fig 8: Removing 42-Pin Wiring Harness And Bracket - With Torque Specifications
  Courtesy of MAZDA MOTORS CORP.
Remove the oil indicator tube bracket nut and the upper intake manifold support bracket stud bolt.

Fig 9: Removing Oil Indicator Tube Bracket Nut And Upper Intake Manifold Support Bracket Stud Bolt - With Torque Specifications
Courtesy of MAZDA MOTORS CORP.
Disconnect the brake booster vacuum hose and the positive crankcase ventilation (PCV) valve tube.

Fig 10: Disconnecting Brake Booster Vacuum Hose And Positive Crankcase Ventilation (PCV) Valve Tube
Courtesy of MAZDA MOTORS CORP.
Remove the bolts and the upper intake manifold.
- Remove the discard the gaskets.
- Clean and inspect all mating surfaces.
  
  Fig 11: Removing Upper Intake Manifold - With Torque Specifications
  Courtesy of MAZDA MOTORS CORP.
NOTE:
- Install new gaskets and tighten the upper intake manifold bolts in the sequence shown.
To install, reverse the removal procedure.

Fig 12: Installing Upper Intake Manifold - With Torque Specifications
Courtesy of MAZDA MOTORS CORP.