Take the interior trim around the window off. It should pry off fairly easily with a screwdiver. You will see some small bolts or nuts depending on the application. Remove thes and the window shold be easy to pry out. Take your time and be gentle so you don't shatter it.
The 1990 Ford Aerostar Maintenance Information manual says 21 gallons.
It might fit but it will take you a while.
The fuel cut off switch is bad! Replace it
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.
Its under the engine, on the drivers side. Two bollts, you cant miss it.
To take the drivers side lock out of a 1990 4runner you will first need to remove the door cover panel. Once the door cover panel is removed you will have access to the lock and can replace it.
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
replace the power window motor inside the door. You will have to drill out the rivets and replace with nuts and bolts
Take a huge poo on your bonnet that should fix it !!haha
It's usually located on the drivers side frame rail. normally up by the engine, but some are located on the frame, under the drivers seat.