well Travis, I got it back from the Ford Garage yesterday. The first thing I did was to initate a passing situation. (Yeah, I got on it). Right back to the same thing. Spit, sputter, refuse to rev. Turned right around and took it back. The mechanic says there no codes on the OBDII concerning the engine and he drove it and it ran fine. So,,,,,,,, I loaded his A$$ up in the passenger seat and commenced to show him. He said he didn't get on it and I said well, if you had read the initial complaint you would have seen that was when the problem occured. Anyway, he hooked up a fuel pressure gauge to the fuel rail and an onboard OBNDII reader. Final answer according to him is Bad Fuel Pump. Pressure goes away after 4000 lbs. I think it being shut down by the CPU as you suggested earlier, but can't make him or the Service Manager understand. It goes back tomorrow, Thursday. I let you know what happens.