| Excessive engine oil consumption |
- Verify that the engine oil filler cap, oil dram bolt, and oil filter are tight
- Check for oil leaks
- Check for worn valve guide(s) (see
VALVE INSPECTION
) or worn valve stem seal(s) (see
VALVE, SPRING, AND VALVE SEAL REMOVAL
)
- Check for damaged or worn piston ring(s) (see
PISTON RING REPLACEMENT
)
- Check for damaged or worn engine internal parts (cylinder wall, pistons, etc) (see
BLOCK AND PISTON INSPECTION
)
|
|
| Low oil pressure indicator does not come on with the ignition switch in ON (II) |
- Do the low oil pressure indicator circuit troubleshooting (Open) (see
LOW OIL PRESSURE INDICATOR CIRCUIT TROUBLESHOOTING (OPEN) )
- Test the oil pressure switch (see
OIL PRESSURE SWITCH TEST )
|
An open in the wire between the engine control module (ECM)/powertrain control module (PCM) and the oil pressure switch |
| Low oil pressure indicator stays on |
- Check the engine oil level
- Do the low oil pressure indicator circuit troubleshooting (Short) (see
LOW OIL PRESSURE INDICATOR CIRCUIT TROUBLESHOOTING (SHORT) )
- Test the oil pressure switch (see
OIL PRESSURE SWITCH TEST )
- Check the engine oil pressure (see
OIL PRESSURE TEST )
- Check the oil filter for clogging
- Check the oil screen for clogging
- Check the relief valve (see
OIL PUMP OVERHAUL )
- Test the oil pump (see
OIL PUMP INSPECTION )
|
A wire shorted to ground between the ECM/PCM and the oil pressure switch |