No oil pumping, oil pressure light beeped every few seconds, parked vehicle, still full of oil, but no oil distibuted

Are you sure that is what it means? It may indicate that your oil needs changing???

Your vehicle may be equipped with low oil pressure engine protection. If so, that issue may need addressed first. Low oil pressure sw cuts off fuel pump, saving engine from catastrophic failure.

This can be a safety feature the manufacturer has implemented in this vehicle. Make sure the oil level is full. Is the vehicle ,making any tapping noises from the top end? ( valve train noise) If oil level is ok, you may have a defective oil pressure switch causing your symptoms. If the engine is abnormaly noisey it is possible there is no oil pressure and further diagnostics will be requred

This is the "Low Oil Pressure Warning" light. It is RED for a reason! When this light (or any RED warning light for that matter) comes on, pull over and shut the engine OFF at once. Allowing the engine to run with insufficient oil pressure can cause a catastrophic failure in mere seconds. Such a failure can cost thousands of dollars to repair.
This warning is most often the result of a very low oil level as indicated when checking on the oil dipstick. The engine oil level should be maintained as close to the "full" mark as possible - without exceeding it. Oil should never be allowed to drop below the "low" mark on the dipstick. If the oil level is shown to be between full and low, the light is probably coming on as a result of a faulty oil pump (the oil level should be checked with the vehicle parked on level ground, with the engine OFF). A faulty oil pump is unable to pump the oil with enough pressure to reach all the moving parts of the engine that require lubrication. Without proper lubrication, connected moving parts heat up, expand and seize. Moving parts are expected to move - not be prevented from moving.
If your engine shut down, it may be the result of some of the internal parts seizing. Hopefully, this is not the case. Check the oil level and top off as needed to bring the level up and attempt to start the engine and have the vehicle checked by a trusted mechanic.
Good luck!

maybe full but could have no oil pressure get pressure checked pump could have stopped or filtres clogged .get pressure checked with manual gauge

hello
Does the icon look like a oil can or is a oil life reminder light if it is a oil can icon then you need to check the vehicles oil pressure and make sure that it does have the correct amount of oil pressure and you have voltage to yhe oil pressure sending unit(switch) if it does then you need to replace the oil pressure sending unit(switch) seen alot of problem with the sending units
Good luck
Chris

Sounds like a weak oil pump at higher rpm the pump creates more pressure which is adaquate to make the light go out and supply oil to the engine. At lower rpm your oil pump is not creating the pressure needed. Be carefull not to let it idle or sit in park to long this could damage the engine. There is oil pressure sending unit also this is what makes the light come on and it also shows the oil pressure on the oil gage on dash if your vehicle is equipped with gage. The sending unit could be faulty, but play it safe and have your mechanic diagnose the problem.

Whinning noise is the bearing of the oil pump inside torque converter.
Burning smell fluid has little to know pressure ( cause pump is dying) can't circulate to cool parts as well as provide pressure. Time for a rebuild.

I would suspect that you have a weak or failing oil pump, however before condemning the pump I would do a physical oil pressure check with a gauge. Oil pumps are not easy to replace so lets make sure it is the problem before replacing it. For reference yours can be done with the motor in the vehicle.

Physical Pressure Test:

This may require you to tuck a oil pressure gauge under the driver side wiper arm and go for a short drive to make the situation replicate. Depending on how you hook up the gauge (in place of oil pressure switch) the light will be on full time during the testing and this is ok. If you can replicate this symptom that you are reporting in the drive way in gear it is desirable as you can better read the gauge.

The oil pressure should be:

3.0L = Oil pressure should be 6 PSI at idle and 35-75 psi at 3,000 rpm with engine at normal operating temperature.

3.3L = Oil pressure should be 5 psi at idle and 30-80 psi at 3,000 rpm with engine at normal operating temperature.

You see that there is a large "in spec" region for the 3,000 rpm range as listed. I would look for the pressure to be at the higher end of the scale and the idle pressure to be right in spec. If any of these pressures are low I would suggest changing the oil pump.

If your motor is one that I have not listed here please comment back and I will provide the appropriate spec per the motor in your van.

There are two basic causes. One, that your oil pressure is really too low at idle. You did not state the mileage, but if the vehicle is high-mileage, this is a possibility. The other is the oil pressure sender is bad, and reporting low pressure when it is actually OK. The best way to know for sure is to have a shop test the actual oil pressure using a calibrated gauge. If the vehicle is lower mileage, and you think the pressure is really OK, it may be cheaper for you to just replace the sender as a test(if you are mechanically inclined enough to do it yourself). If the warning light goes out, the old sender was bad.

If replacing the sender does not cure the problem, then you have low oil pressure. This will shorten the life of the engine, so you need to have a mechanic diagnose the problem. Possible causes are: bad oil pump, excessive bearing clearances due to high mileage, oil pump intake blockage due to sludge in the oil pan, stuck pressure relief valve. Unfortunately, none of these problems will be cheap to fix.