2001 Lincoln Navigator Low Oil Pressure when engine cold

2001 LINCOLN NAVIGATOR
100,000 MILES • V8 • AWD • AUTOMATIC
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MSLILE
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Oil Pressure gauge show low oil pressure and Oil and Coolant light comes on when engine is cold. After 3-4 minutes and engine reaches normal temperature the oil pressure comes up to normal and the lights go off.

Using mfg. recomended 5W-20W oil. Could this be a sensor or somthing more serious?
Oct 23, 2009 at 11:48 AM
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RASMATAZ
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Sounds like the oil pressure relief valve is sticking check the oil pressure with a mechanical gauge if normal replace the oil pressure switch abnormal could be oil pump or engine bearings
Oct 23, 2009 at 11:55 AM