My symptoms are these. On start up, my 240 runs great until the engine begins to warm up. It will then begin bucking and die. I can keep it running at a stop only by keeping my left foot on the brake and applying the gas pedal with my right. My gas mileage has been abysmal of late, as you might expect. My check engine is on yet the codes at terminal 6 indicate 1-1-1 as if nothing's wrong. The AMM has proven to be good. The oxygen sensor has also been recently replaced. I've also cleaned the flame trap and searched for vacuum leaks. Throttle body is clean.

The symptoms have now begun worsening. For a while, it ran fine once I got rolling and gained rpms. Yesterday, however, it started losing power on hills and began bogging down to the point that I felt I might not get it home. At this point, it's parked until I can this solved. This car is my main source of transportation, so any help will be greatly appreciated. Jim