I have a 2001 ford Windstar with 178,000 miles, the van ran great no problems. Well about 2 weeks ago it developed a problem with slamming while shifting. When you put it into drive it will slam in to gear, (feels like the motor is jerking the van, just jerks forward). the other issue is when driving when this first happened if you were in 4th and around 40 to 60 and accelerated but not enough to down shift she would jerk and lunge (you have to force it to down shift). Now she jerks and what not when she down shifts and some times up shifting, it feels like the motor is shaking.
Not completely sure what it is but I think it is the rear motor mount, going to replace it to day, just wanted to know if you had any ideas. Well thanks for your time