I missed your statement about the TSP reading .15 volts. I would perform the TSP test, it will confirm if the ECM is bad. Here is a link for the test; http://easyautodiagnostics.com/ford/4.9L-5.0L-5.8L/throttle-position-sensor-tests-2#1[/URL] If it points to the ECM and you find you need an O2 harness for an automatic, let me know and I will see if I have a spare one.