Ford Aerostar Coil Replace/Remove

When The Van Is Sitting In Idle It Runs Great Put It In Gear It Runs Like It Is Missfiring I Have Changed Plugs Wires Cap Button And Coil...

Ive Replaced Coil,distrubitor,cap,rotor,ign Control Module,plugs,wires,and The Computer But Still Have Not Got Any Fire Can U Help...