I have a 91 Galant gs Manuel transmission. Has a 93 motor in it because some college kids blew the original. I dont know much about Galants so im at a loss here. The car starts fine drives fines and what not. But turn it off or kill it and you are stuck for the next 45 min to an hour. The car will not stay running when you try to restart it. The hole car shakes from the engine back, pretty bad actually. We thought it might be a fuel pressure problem so we got a new fuel regulator and nothing same thing with a fuel pump. We got nothing now were at a loss for things to try. So any ideas.