My Sho seems to be loseing power in second gear @ about 3000 to 4000 rpm (car just falls on its face and barley accelerates to speed kinda like its studdering).. after lots of testing the only thing we have found is a canister that is not holding vacume that leads to the secondary intake runners ford has said its called a resivor assembly prt # E9DZ9E453A but i have not found any diagrams to confirm what this part is. this has three ports and is not connected to the motor nor dose it have electrical connection to it... Anybody with any knowlege here?