Protege 1999-2000

Oil Pressure Sensor

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Removal & Installation



Specific to:

Mazda Protege 1999-2003

Mazda Protege5 2002-2003

  1. Remove the intake manifold bracket on 2.0L (FS) engines.
  2.  
  3. Unplug the connector and remove the oil pressure switch.
  4.  

To install:

  1. Apply silicone sealant to the oil pressure switch threads.
  2.  
  3. Installation is the reverse of removal. Tighten the switch to 9-13 ft. lbs. (12-17 Nm).
  4.  

Testing



Specific to:

Mazda Protege 1999-2003

Mazda Protege5 2002-2003

  1. Verify that the oil pressure warning light illuminates when the ignition switch is turned to ON.
  2.  
  3. Verify that the oil pressure warning light goes off when the engine is started.
  4.  
  5. If the oil pressure warning light does not illuminate or remains illuminated, inspect the oil pressure warning light bulb and related wiring harness.
  6.  
  7. If the oil pressure warning light bulb and related wiring harness are normal, inspect the oil pressure.
  8.  
  9. If the oil pressure is normal, replace the oil pressure switch.
  10.  
  11. Test the oil pressure as follows:
    WARNING
    Hot engines and oil can cause severe burns. Turn off the engine and wait until it and the engine oil have cooled.

    1. Remove the intake manifold bracket on 2.0L (FS) engines.
    2.  
    3. Unplug the connector and remove the oil pressure switch.
    4.  
    5. Screw an oil pressure gauge into the oil pressure switch installation hole.
    6.  
    7. Start the engine to normal operating temperature.
    8.  
    9. On the 1.6L (ZM) engine, the pressure should be 43-56 psi (300-390 kPa) @ 3000 rpm.
    10.  
    11. On the 2.0L (FS) engine, the pressure should be 57-71 psi (400-490 kPa) @ 3000 rpm.
    12.  

  12.  
  13. If the oil pressure is a specified, replace the switch.
  14.  

 
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