POSSIBLE CAUSES
1. Low oil level
2. Faulty oil pressure sending unit
3. Clogged oil fitter
4. Worn oil pump
5. Thin or diluted oil
6. Excessive bearing clearance
7. Oil pump relief valve stuck
8. Oil pickup tube loose, broken, bent or clogged
9. Oil pump cover warped or cracked
CORRECTION
1. Check oil level and fill if necessary
2. Install new sending unit
3. Install new oil filter
4. Replace oil pump assembly.
5. Change oil to correct viscosity.
6. Measure bearings for correct clearance
7. Remove valve to inspect, clean and reinstall
8. Inspect oil pickup tube and pump, and clean or replace if necessary
9. Install new oil pump