2007 Ford E150, 4.6L Engine, 97000 miles

At my wits end with this truck - experiencing random/intermittent stalls and forced engine shutdowns. No real pattern on when it occurs, sometimes it does it's thing on first startup, other times not. The truck runs smooth as silk when it's NOT stalling. When it does stall/stumble, I turn the key off & start back up - sometimes it returns to normal right away, sometimes it takes 3 or 4 cycles of key on off cycles. I have a decent scan tool, the Ford service manuals AND the PC/ED troubleshooting manual.

I have replaced a ton of parts through this process (to no avail so far) which I don't mind so much because they're mostly all parts I would be replacing soon anyway (I purchased this vehicle used a few months ago). Seems to be fuel delivery related, but could just as easily be electrical or data communication related. Here's the list of items replaced so far - Spark Plugs, Coil Packs, Air & Fuel Filters, PCM (Engine Computer), EGR Valve, MAF, All 4 O2 Sensors, Alternator, Serpentine Belt, Pulley & Tensioner Assembly, Fuel Pump. I'm sure this is going to end up being something completely ridiculous and simple - if and when it's ever resolved! I'm sure that one of the first questions to be asked will be what DTCs have come up. One that is interesting and has come up more than once is P0600, which seems to be related to communication issues. This is what caused me to replace the PCM, again to no avail.

While observing the live data when the condition occurs, all of the values freeze while the engine is still running and before it eventually quits on it's own. Any insight or guidance on this nightmare would be more than appreciated!

 

Don't know if you found this Link yet?

Your problem sound kind like a CPS fault, but then you replaced most all sensors now.

When you write that it looses all electrical power, and shuts down, that sounds like a problem with a bad ground wire.

Battery terminals clean and tight?? Cables in good condition??
Body/engine grounds clean and tight??

 

Hello and thanks for your reply. Yes, I had looked at all that guy's topics - good resource! Yes to all your ? - I'm still in the process of checking all the grounds, main cable good, grounds to body redone, etc. Checked CMP yesterday, tested ok. Picked up a P061B which points to "an intermittent CKP sensor or harness concern may cause DTC P061B to set", so that's the next trail I'll follow.

 

Thought of something else..........from what you wrote......this sounds like a problem with a circuit breaker, or a fuse-able link shorting out???

if you can get the FSM on the wiring, you'll be able to trace down the breakers and links from there. I have the '05 FSM, 3 books, with the wiring on it's own.
This should be the same from '05-'07.