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Home >> Mazda >> 2009 >> MX-5 Miata Touring, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (LF 2.0L) >> Crankshaft Position (CKP) Sensor Removal/Installation [LF] >> Installation

Crankshaft Position (CKP) Sensor Removal/Installation [LF]: Installation

CAUTION:
  • When foreign material, such as an iron chips, gets on the CKP sensor, it can cause abnormal output from the sensor because of flux turbulence and adversely affect engine control. Be sure there is no foreign material on the CKP sensor when replacing.
  1. Perform the following procedure so that piston No. 1 is at the top dead center.
    1. Move the ATF hose slightly out of the way.

      (AT)

      Fig 1: Identifying ATF Hose
      G06151100Courtesy of MAZDA MOTORS CORP.
    2. Remove the cylinder block lower blind plug and install the SST. 
    3. Turn the crankshaft pulley to the clockwise until it stops.
    Fig 2: Identifying Cylinder Block Lower Blind Plug
    G06151101Courtesy of MAZDA MOTORS CORP.
  2. Using a straight edge, draw a straight line directly in the center of the 5th tooth of the crankshaft pulley pulse wheel (counting counterclockwise from the empty space).
    Fig 3: Aligning Center Line Of CKP Sensor And Line Drawn
    G06151102Courtesy of MAZDA MOTORS CORP.
    CAUTION:
    • If the line is not accurately drawn, ignition timing, fuel injection and other engine control systems will be adversely effected. Draw the straight line carefully using a straight edge.
  3. Align the center line of the CKP sensor and the line drawn in Step 2, then install the CKP sensor.
  4. Install the CKP sensor fitting bolts.

    Tightening torque 

    5.5-7.5 N.m {56-76 kgf.cm, 49-66 in.lbf} 

  5. Remove the SST  then install the cylinder block lower blind plug.

    Tightening torque 

    18-22 N.m {1.9-2.2 kgf.m, 14-16 ft.lbf} 

  6. Install in the reverse order of removal.