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Symptom Troubleshooting Index

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Symptom Diagnostic procedure Also check for
Excessive engine oil consumption
  1. Check for oil leaks.
  2. Check for worn valve guide(s) (see VALVE STEM-TO-GUIDE CLEARANCE INSPECTION ) or worn valve stem seal(s) (see VALVE, SPRING, AND VALVE SEAL REMOVAL ).
  3. Check for damaged or worn piston ring(s) (see PISTON RING REPLACEMENT ).
  4. Check for damaged or worn engine internal parts (cylinder wall, pistons, etc.) (see BLOCK AND PISTON INSPECTION ).
 Check the maintenance records as engine oil that is worn out burns off at a higher rate
Low oil pressure indicator stays on
  1. Check the engine oil level.
  2. Do the low oil pressure indicator circuit troubleshooting (Open) procedure (see LOW OIL PRESSURE INDICATOR CIRCUIT TROUBLESHOOTING (OPEN)  ).
 An open in the wire between the PCM and the oil pressure switch
Low oil pressure indicator does not come on with the ignition switch in ON (II)
  1. Do the low oil pressure indicator circuit troubleshooting (Short) procedure (see LOW OIL PRESSURE INDICATOR CIRCUIT TROUBLESHOOTING (SHORT)  ).
  2. Test the oil pressure switch (see OIL PRESSURE SWITCH TEST  ).
 A wire shorted to ground between the PCM and the oil pressure switch
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