Loud noise is not a good description. If its a loud squeal turn the air conditioner or defroster off. If the squeals goes away the compressor or the clutch for the air conditioner compressor is locked up.
The 1990 Ford Aerostar Maintenance Information manual says 21 gallons.
It might fit but it will take you a while.
The 1990 Ford Aerostar and the 1989 model share a similar design and platform, as they are part of the same generation of minivans. However, the 1990 model introduced some minor updates, including improvements in interior features and safety enhancements. Overall, while they maintain a similar overall appearance and functionality, the 1990 Aerostar has subtle refinements that differentiate it from the 1989 version.
The proper gap for 1990 aerostar spark plug is .044. This was taken from Dept of Motor Vehicles in Delaware. - Bill R. Jr.
You have a 21 gallon tank.
In a 1990 Ford Aerostar : You either have the 3.0 liter V6 engine or the 4.0 liter V6 engine from the factory ( each size of engine has 6 engine cylinders )
It's inside the gas tank
The distributor for a 3.0 liter in a 1990 Ford Aerostar rotates CLOCKWISE ( looking from the top ) The spark plug firing order is ( 1 - 4 - 2 - 5 - 3 - 6 ) The engine cylinder locations are numbered : 3 - 6 2 - 5 1 - 4 front of Ford Aerostar
Check the fuses first!
21 gal. probably, full it up and see.
Under tyhe dash driver side
1 - 4 - 2 - 5 - 3 - 6