Low oil pressure can be many reasons bad or dirty sensor at right rear of engine or your car can have a sensor in the side of the pan passenger side. a weeping head gasket allowing moisture or a water pocket to build up at the sensor water cant properly pressurize the sensor.....
On a 1989 Ford Aerostar : I believe the oil pressure sending unit for the oil pressure gauge on the 4.0 liter EFI , V6 engine is on the drivers side of the engine below the power steering pump
On a 1996 Ford Aerostar , 4.0 liter V6 engine : The oil pressure sending unit for the oil pressure gauge is on the drivers side of the engine below the power steering pump
On a Ford 4.0 liter EFI , V6 engine : The oil pressure sending unit for your oil pressure gauge is on the drivers side of the engine , below your power steering pump
high oil pressure usually means that a liner in the engine cylander has dropped. take it to a mechanic
On the 4.0 L - OHV - V6 engine , the oil pressure sending unit is on the drivers side of the engine below the power steering pump
On a Ford Aerostar : I know on the 4.0 liter EFI engine ( which is an Over Head Valve / push rod design engine ) the sending unit for the oil pressure gauge is below the power steering pump on the drivers side of the engine
Oil pressure shouldn't register at all until the engine starts and builds up pressure.
picture of engine of 1991 ford aerostar van
The oil pressure sensor sends a reading to the gauge so you can moniter the engine's oil pressure. No oil pressure means the engine is in big trouble.
( there are 6 engine cylinders ) for the 1994 Ford Aerostar 3.0 liter V6 engine
Does it quit shaking when it warms up? What engine and year of Aerostar?
On a 1993 Ford Aerostar , 3.0L V6 engine : The distributor is located on the TOP of the engine , near the REAR