I have a 93 Civic LX automatic and i currently just dropped another D15B7 motor in it for my wife and the engine rotates when the tranny is off but as soon as I put the tranny back onto the car the motor it will not rotate. The motor had a 5 speed hooked to it and i changed it over to an automatic i changed over the flex plate and fl dropped it in the car and this happened. What will cause this problem? I kno it has something to do with the tranny right?