It should be located on the drivers side frame rail near the rear of the motor. (This is under the vehicle)
On a 1993 Ford Aerostar , 4.0 liter V6 engine : With engine oil filter change : I ASSUME it is the same as the 4.0 in my 1995 Ford EXPLORER ( 4.7 litres / 5.0 U.S. quarts of 5W-30 engine oil )
A 1993 Ford Aerostar would have come from the factory with ( 5W-30 )
According to the 1997 Ford Aerostar Owner Guide ( 5W-30 ) With engine oil filter change : For the 3.0 liter V6 engine ( 4.5 U.S. quarts of 5W-30 engine oil ) For the 4.0 liter V6 engine ( 5.0 U.S. quarts of 5W-30 engine oil )
According to the 1996 Ford Aerostar Owner Guide : ( 5W-30 ) is the preferred oil
A 1993 Ford Aerostar ( 3.0L and 4.0L V6 engines ) came from the factory with ( 5W-30 )
5W-30
its mounted to the frame under the drivers seat
The 4.0 liter OHV , V6 engine in my 1995 Ford EXPLORER holds : With engine oil filter change : ( 4.7 litres / 5.0 U.S. quarts of 5W-30 engine oil ) I assume your Aerostar would be the same
According to the ( 1996 ) Ford Aerostar Owner Guide : With engine oil filter change : The 4.0 liter V6 engine takes : ( 5.0 U.S. quarts / 4.7 liters ) * 5W-30 is the PREFERRED oil
I ASSUME it would be the same as the 4.0 liter in my 1995 Ford EXPLORER ; ( 39 / 40 PSI , key on , engine off , and 30 PSI with engine running at idle )
Could be a fuel filter or fuel pump is weak. Change fuel filter and check output pressure of the fuel pump at the Schrader valve on the fuel rail. You will need a fuel pressure gauge. At idle you should be getting at LEAST 30 to 50 psi.
is it an Aerostar, a Taurus, a Ranger, a Tempo?