I have had the truck since new, about two years ago. I started having problems with the oil light coming on and the oil pressure dropping off, with no lack of oil in the engine.

If i shut off the engine for a couple of minutes and turn it back on the light goes out and the comes back up. However if I continue to run the engine it start making a noise. I have had the problem check several times, even had the engine flushed twice and the oil pump checked twice, yet know one seems to know what the problem is.