My 2001 trep with 3.2 eng turns off 1 to 2 miles from my res. on the way to work only. Last spring to correct this problem I switched the PCM and the TCM back to the orig. 2.7 units and the car ran fine til fall. Now the same neighbours watch me sit on the roadside for a minute or two and restate and drive away with no futher trouble for the day even when the car sits at work all day. I changed the output speed sensor as a result of limping home one evening during the summer. I can avoid the shut down by using 3rd rather than OD in the morning. It seems to get lockup in 3rd. Some times the car shifts like a boat, I feel a subtle hesitation, and notice a momentary tack drop in lockup or OD. Should I have change both speed sensors? did the computer change clean dirty terminals? does defrost use have something to do with it or is there solenoids in the transmission acting up and turning the car off. I have the battery code and 442 and 456 (leak lines too close to the road). I haven't tried a C :smilie_cl reader yet just the key.