460 oil psi

Low oil pressure maybe? Oil pressure will vary depending on engine speed-higher speed=more psi, lower speed=less psi. If there is a mechanical reason for low oil psi then idle is when it will be low enough to turn on or flicker the light. Also, you could very possabily have a slugged up oil pick-up screen.

You should install a transmission oil cooler that is good for 20,000 psi it will help with the loud of the trailor and the size of the tires.

first thing check is the engine oil level.if oil level okay check oil pressure should be for the 4.2 engine oil pressure should be 12 psi @ 1200 rpm for the 5.3 oil pressure should be 18 psi @ 2000 rpm if oil pressure good problem in the oil pressure sending unit. if oil pressure is low problem faulty oil pump or worn crankshaft bearings if oil pressure low engine will have rod knock.make sure you are using correct oil viscosity if oil too thick you will have low oil pressure oil too thin you will loose oil pressure.

Is there oil in it and is it the correct grade.

Well how recant is the reading been saying this i mean did it all of a sudden start reading low . 10 PSI is to low for a hot engine you could try replaceing the oil pressure sending unit but if this dosn't fix it then i would have to say you have a serious problem interinaly in the engine eighter valve or ring related or a big oil leak somewhere dose it burn oil?

This is because the oil pump is not pumping enough oil. It is either very low on oil, or the oil pump is going out. The light comes on when the oil pressure drops below 5 psi. This is very low. It should run about 25-30 psi at an idle.
Please rate 4 thumbs up, if this helps! Thanks for using Fixya.com

OIL PRESSURE SHOULD BE 70 PSI@4000 RPM 30 PSI AT IDLING. MAKE SURE OIL FILTER AND OIL BEEN CHANGED AND MAKE SURE OIL LEVEL NOT LOW.AND YOU USE THE RIGHT OIL.IF ALL IS GOOD OIL SENDING UNIT COULD BE BAD.

Increase the viscocity of your oil. If you're using 10W30, go to 10W40. If you're using 10W40 switch to 20W50. Don't use single weight oil.

Yes, replace the sensor its close to th oil filter.

Have a shop verify the pressure is really low, it could just be the sending unit is defective for the oil press guage, but get it checked, if it really low you could burn out the bearing in your engine, a very costly repair.