Cavalier, Sunfire 2001-2005

Oil Pressure Sensor

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Removal & Installation



  1. Disconnect the negative battery cable
  2.  
  3. Raise and safely support the vehicle.
  4.  
  5. Drain the engine oil.
  6.  
  7. Disconnect the sensor electrical lead and unscrew the sensor.
  8.  

To install:

  1. Coat the first two or three threads with sealer. Install the switch and tighten until snug.
  2.  
  3. Attach the electrical lead.
  4.  
  5. Lower the vehicle.
  6.  
  7. Connect the battery cable and fill the engine with oil.
  8.  

Testing




WARNING
This test is for testing the switch only. Verify that the engine has sufficient oil pressure before conducting this test.

  1. Unplug the switch electrical connection.
  2.  
  3. Connect one lead of a ohmmeter to the switch terminal and the other lead to the switch body.
  4.  
  5. With the engine off the resistance should be approximately 1 ohm.
  6.  
  7. Start the engine. The resistance should increase as the engine speed increases.
  8.  
  9. If not, replace the sensor.
  10.  

 
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