I have a 95 4.6 and the trans only has gears 1 and 2 but when the trans or motor is cold I will barely be able to accelerate. I can press the throttle a little bit but if I push it down past a certain point the car just bogs out and slows down without dying. I don't know if it's the trans or the motor? But the problem disappears after driving for a bit. Any ideas what it could be?