Fortunately, this engine does not have VCT.
If it did, it would be just one more expensive thing to go wrong on this dog.
There has to be an answer somewhere, guys, the net is crawling with this problem.
Since it runs well when cold, and craps out when it reaches operating temp, I'm wondering if there is a short in the harness somewhere, and it messes up when the ECU tries to communicate with the sensors in closed loop.
The thing that gets me, though, is we get good signals from every sensor and good waveforms when we check them. No flat spots, no drop outs, no unnecessary noise on the scope. The fuel pressure reads 40 at all speeds and 35 at idle, but I guess I still can't rule out a fuel pump.
<----- that's me after dealing with this thing
sheesh
