stalling problems-help

i've got a 00 stratus with a 2.4l automatic,replaced motor because of a bad head. since then it would stall on me going down the road. would have to turn the key off then turn it back on and start it. now it won't even do that. changed computer, knock sensor, cam sensor, coil, fuel pump and filter. still stalls, someone told me about a sensor that triggers off the torque converter but can't find it. can anyone help me?

ive got a 96 stratus that is doing the same thing. ive been toold to replace the crackshaft timming sensor. by the way my car has 98,000 mile on it. when i pulled my crank timing sensor it litterly (sp?) fell apart in my hand. from what i was told by a master tech. at the dealership i work at is that there major problems with this sensor design.

back side of the block? thanks

Maybe the timing is off. When I changed my timing belt it looked like it was correct but the timing was a little off and the car would always stall.

sorry timming not off. just shuts down like you turned the key off, won't start back up unless you turn the key off and start it back up