Automatic Transmission Control Module problems of the 1997 Ford F-150

Vehicle was bought in 2/01 and had approx one week when it stalled everytime it decelerated. Dealership (e-z way auto sales) took vehicle back and replaced pcm at no charge to us. In 01/02 it started hesitating as if it were slipping out of gear. Does not do all the time-just unexpectedly. Had transmission flushed (80$-01/31/01). Still sputtering--replaced fuel filter and air filter over the course of 2 months--problem was not major and did not happen all the time-just when you least expected it. Then in March it just stalled while my girlfriend was driving it and daughter was in the backseat at 60mph! took to local mechanic and they could not receive a diagnostic code-finally after two weeks of driving it to see if they could make it sputter or stall it happened and they receive a code for a egr valve which was fuel related--did not fix, cost 105$--took back to them and they kept an additional 2 weeks and said they gave up--could not diagnose. Took to local Ford dealer(tri-county Ford 05/02) and they had 3 days before it happened again. Replaced pfe sensor (192$-p0401) which I am told is the one which controls the valve that was replaced. Did not fix-returned to Ford dealer(05/02) and they had a few more days and received another code(p0605) and was told my pcm needed replacing. When I told the tech it was just done a little over a year ago he said it was probably a junked part. E-z way will not fix. They said that the warranty was expired and it was up to Ford. Ford will not replace part, have already been that route. Said if it had been repaired at a certified Ford dealer the whole time maybe they could help and all parts have 12mth warranty. E-z way offered 200$ toward the part but only if we take it to the place that originally replaced the part(which happens to be operated by the owner of e-z ways brother). But no one will guarantee that this will fix our problem. Also, vehicle was sold to us without 2 major safety recalls being repaired.