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What year and model Ford are you working on?
It may be just a bad oil pressure switch. If the engine is not making any ticking noises when the engine is running and the light is on, then replace the oil pressure switch. But if the engine is ticking when the oil light is on, then the oil pump may fix it, but make sure the engine is not sludge up blocking the oil passages in the engine.
The oil pressure switch is really just an on off switch. When oil pressure hits it, it closes a path to ground to move the gauge and /or turn the light off. You can remove the sensor and install a mechanical oil pressure gauge in the opening and check the actual oil pressure. It should be 25 psi at idle and up to 60 psi at 2500 rpms.
There are companies out there that can do engine flushes for you. You will have to call around.. I would not recommend doing it yourself as it could damage the engine if done wrong.
Ok, I completely understand.
Sure can, just reply back on this page.
Your very welcome.
No tips off hand at this moment. But the directions for the sensor are below.
Yes, if the oil is clean and full on the dipstick, replace the sensor.
Your very welcome. thank you.
Not that I know of right now.