Have problem with carbon pouring out of exhaust. New oxygen sensor put in. Idles high and low. Makes a ticking sound. Need diagram for vacuum hoses or any other information on this van would be appreciated. If anybody knows anything about these vans please respond right away. It is a pig on gas, I get 300 kilometres to a tank of gas (180 miles).

 

Sounds like a fuel regulator problem.
You might want to post your question in the Aerostar forum for more information.