Bad oil pressure sending unit? Try replacing with a mechanical gauge Excessive engine wear? Do a compression test
No, warn engine parts will cause loss of oil pressure as the engine warms up, due to expansion betweeen moving parts. Hot oil is thinner.
it may be the oil pressure sender located on the engine
2004 dodge grand caravan 4.0sxt cuts up when apply brake in gear and rpm go up and down.
i have a 2000 dodge work van 318 engine when i start in the morning it stalls several times until it warms up then ok
yes Engine is wearing out.
1 reason might b worn bearings
if i remember correctly when you first crank the engine the oil pressure should be around 60psi. after it warms up about 40psi.
It will get pushed out onto the ground as the engine warms up.
Oil gets thinner when its hot. Use a slightly higher viscosity.
This is normal as when the engine warms the viscosity of oil lessens, thus also reducing the oil pressure. On a cold start the oil pressure is on the high side, say reads at 75 at idle, then at operating temperature it can just read between 25 to 50 at idle speed, depending on which viscosity rating of the oil you use.
is the van getting spark? does the fuel rail have fuel pressure Might want to check your knock sensor if equipped
If the main and/or rod bearings are worn, the oil pressure can't be maintained after the oil warms up and thins out. You might be able to get a little more life out of the engine by switching to a heavier weight engine oil. It is possible also that just the oil pump has worn and can't produce enough pressure at idle. Very often, though, if the pump is worn, so are the bearings, and vice-versa.