Lost

[Power Hungry]

Jack,

The "electronic brain" issue only seems to be a problem in the 6.0L, and only with specific calibrations. However, the rest of your concerns are entirely valid for your vehicle, although I doubt any would leave you immediately stranded. Most of them develop drivability symptoms over time and give you fair enough warning.

As they say, the more complicated you make it, the more things there are to break.

[BlackSTX]

It all makes me long for the days of the carbs and HEI distributors. No ECMs, no O2 sensors, no injectors, and chips were for consuming with dip while watching sports on TV. Why, I can remember when you could open the hood and actually see all of the engine!

[BlackSTX]

Of note: In the original post he mentioned the cam phasers had been replaced already, perhaps this could be ruled out. .....unless there has been enough contamination of the oil to plug them up, or low oil pressure to begin with?
The sound he hears certainly seems consistent with a plugged cat or restricted fuel flow, but some of this is replaced also. What are we all overlooking?

[tadams11201]

iiiiii.

[tadams11201]

Sorry, MAF readings.. not MAD readings.

[tadams11201]

iiiii

[Jackpine]

If you're in 3rd gear, with the Torque Converter locked, the ISS should match the OSS. If not, something's "slipping". So, monitor the "Comm Gear" PID, ISS and OSS to check this. In 4th, the OSS would be higher than ISS with the TC locked and in lower gears, the OSS will be lower than ISS.

Again though, the TC has to be locked, because if it's not, they will always be different.

I'm puzzled when you say it won't shift to high gear (4th) when cruising. Do you mean if you are holding a steady speed at say 60 mph on a level highway the truck never gets into 4th gear? If that's the case, something is badly wrong.

- Jack