Mazda RX-8 2004-06

Crankshaft Position Sensor

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Operation



The crankshaft position sensor reads the rotation of the crankshaft, which the computer translates to determine engine-timing sequences. The computer uses this reading, in conjunction with the camshaft position sensor, to determine proper fuel injection and ignition timing.

Removal & Installation



  1. Remove the right front wheel.
  2.  
  3. Remove the splash shield.
  4.  
  5. Disconnect the CKP sensor connector.
  6.  
  7. Remove the installation bolts to remove the CKP sensor.
  8.  

To install:


NOTE
Perform the following procedure so that piston No.1 is at the top dead center.

  1. Remove the right side driveshaft.
  2.  
  3. Remove the cylinder block lower blind plug and install the special service tool or equivalent.
  4.  
  5. Turn the crankshaft pulley to the clockwise until it stops.
  6.  
  7. Using a straight edge, draw a straight line directly in the center of the ninth tooth of the crankshaft pulley pulse wheel (counting counterclockwise from the empty space).
    NOTE
    If the line is not accurately drawn, ignition timing, fuel injection and other engine control systems will be adversely affected. Drawn the straight line carefully using a straight edge.

  8.  
  9. Align the centerline of the crankshaft position sensor and the line drawn, then install the sensor.
  10.  
  11. Install the CKP sensor fitting bolts. Tightening torque 4.1-5.5 ft lbs
  12.  
  13. Remove the special service tool or equivalent then install the cylinder block lower blind plug. Tightening torque 15 ft lbs
  14.  
  15. Install the right side driveshaft.
  16.  
  17. Install the splash shield.
  18.  
  19. Install the right front wheel
  20.  

 
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