Where is the computer on a 1990 Ford Aerostar?

A 1990 Ford Aerostar doesn't have a computer in the same way a modern car does. It doesn't have a central processing unit (CPU) like a desktop or laptop. Instead, it has several smaller, specialized electronic control modules (ECMs) or Engine Control Units (ECUs) that handle various functions. These are distributed throughout the vehicle. The primary one related to the engine would likely be located near the engine itself, possibly under the hood or in a nearby area. There wouldn't be a single "computer" location.