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Do you mean what causes low oil pressure? This is a very reliable engine for the most part. If the oil light is on or gauge is reading low, have the oil pressure sensor inspected for failure. These sensors do go bad.
the oil pressure sensor tells the ECM when there is insufficient oil pressure to safely run the engine
when you start an engine there is oil covering the pump inlet and the pressure buils up
if there is insufficient oil to maintain pressure ,or the pump cannot maintain a low preset pressure , the ecm will shut the engine down to protect it
like wise if the wiring is loose /faulty the signal from the sensor is interrupted and that tells the ecm to shut the engine down
again if the sensor is faulty , the ecm will shut the engine down
how to fix :-
install a mechanical oil gauge in the system and check for oil pressure achieved
replace the sensor switch with a known good one
run the fault codes
You are most likely in a state of partial seizure. I would take that car to a pro quick as your oil pump sounds like its failing and causing the car to lock up and die. Sorry to say but by the sound of it you are going to be in the market for a new motor or a car very soon.
If the oil pressure light ever comes on while you are at speed, the damage has already been done.
The oil light does not indicate the car is low on oil (based on your discription) it indicates the oil pressure is low, the no start is most likely due to this low pressure and the fuel pump has been cut off to prevent damage to the engine from low oil pressure. Please have a shop locate the cause of the low oil pressure warning and repair it as needed. It could be a false light or a real one, which means if you drove it very far you may have damaged the engines bearings.
Doubt it had anything to do with the oil change or belts replacement unless they were done wrong. e.g. improper oil or belt placement. Sputtering, as you stated usually comes from the fuel system. Check that.
If its reading low oil pressure I would first change your oil and filter.A clogged oil filter will cause your oil pressure to drop.Also remove your pressure sending unit and hook up a direct oil pressure guage to see what your actual pressure is.Its very possible that your oil pump could be bad.Those would be the most probable reasons for low oil pressure.The engine shut down means that your your engine has a fail safe to protect your motor from blowing up.
Have the vehicles oil pressure checked. If oil pressure is good then its the switch or the circuit. If oil pressure is not up to spec's then you have to replace the pump and there may have to be some engine work done like crankshaft bearings and cam shaft bearings. Have a technician check this out. This vehicle will shut down if oil pressure is too low.
Remember we are talking about OIL PRESSURE NOT OIL LEVEL.
I don't think a 92 sundance will shut the fuel pump down when the oil pressure is low, but it might. Can you get it to run on carb cleaner. If it is oil pressure, the car should start then run a few seconds and die. Have you checked the timing belt? If it broke the distributor will stop turning which would stop the oil pump.