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What causes low oil pressure when the oil level is correct?

(2002 Ford Explorer)
in Orland Park, IL on July 30, 2010
My 2002 Explorer has approx. 160k miles and in general is in good running condition. Very recently the "Hi Temp / Low Oil" warning light has come on. This has happened 2 times. Only when driving after the car is warm. Each time the "Hi Temp / Low Oil" ligt came on, the Oil Pressure Gauge needle also dropped. The warning light and gauge fluctuation were only momentary, lasting only 1-2 seconds, but at that time the engine seem to stall a bit. The first time, I checked the oil level which was low, and I added oil to the proper level. The second time was very soon after an oil change had been done. I checked the oil level, but the level was correct. I have not talked to a mechanic about this yet.
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Popular Answer
on November 15, 2010
bad or weak oil pump! it can also be that your oil pump is clog due to junk in engine.I suggest you try a oil treatment first, if that dont work I would check oil pump.
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