Lost

[Jackpine]

Originally Posted by osprey

Thank you, Bill, for clearing up my idea.

Coming from over 35 years of working on engines from a 59A flathead in a '37 coupe to today's modular engines, I knew what the symptoms sounded like, but wasn't sure what exact component was the culprit. Hearing about this problem makes me even more leary of the 5.4 3V and the cam phasers.

The more I hear about what can go wrong, the more nervous I am to take my truck out in the "bush". Let's see, we have cam phasers (sounds like something out of Star Trek), fuel injectors, COPs, plugs that fall apart when removed, a fuel pump driver module that likes to swell up and crack, any number of sensors that can all go belly up at any time, and, an electronic brain that might develop a crack in a solder joint which would render it useless.

Wish I had an old WWII Army Jeep.

- Jack

[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