yes replace the sender before anything else
it is the cheapest place to star looking for the problem
Normally it causes a lower reading then higher
It could cause a high reading on the gauge.
Yes. However, the oil pressure switch may be accurate, in which case you have low oil pressure in the engine which can be caused by a faulty oil pump or clogged oil pump screen. Low oil pressure can cause serious damage to the engine. The oil pressure switch is shutting the engine down to prevent any damage. The best thing to do is take the car to a mechanic.
Found out this can be cause by a faulty oil pressure switch best known as oil pressure sending unit
A faulty pump, a faulty switch, a faulty release valve on the drain pipe.
No, not unless the vehicle is designed to shut off when the oil pressure falls below a certain level. Replace the oil pressure sending unit to find out.
A fuel rail pressure regulator could cause trouble.
Indirectly, yes.
most likely is a faulty chime switch,or a faulty ignition switch
Not likely.
Yes, sometimes a faulty ignition switch can cause the engine to not fire. Also, a bad spark park can the engine to not fire.
Yes. The well pump turns on when the pressure in the accumulator tank falls to a low enough pressure to actuate the switch. If the pump check valve is leaking, the pressure is being bled back through the pump until the switch trips and the pump turns on. Other leaks in the system that allow the pressure to bleed down can also cause this.