05 6.0 Rolls Black smoke; DIES; No refire; Code P0148

[mblgjr]

Ok; after approx. 5hrs back in service from what appeared/seemed to be ICP failure my truck has left me stranded AGAIN.

Last time this happened the ICP sensor on the pass. VC was replaced and it had more power and ran smoother. All seemed well; the truck has run approx. 5-7hrs (3-4 hrs at a time without stopping) without issue until last night.

Same symptoms but I have a code this time. P0148 I know this is a 'fuel delivery error' (no kidding huh!).

NO SES or CEL lamp; no crank or cam sensor codes (but I'm using a cheap readout tool).

Unplugged AND replaced ICP again; to no avail.

What happens: You'll be running along; truck will "cut" fuel for just a split second to the point that you question it was just a bump in the road. Approx. 6secs later it goes into a hunting/surging gyration and starts cutting out more and more. I pull over and it lopes at idle, place it in neutral and it goes FULL RICH and starts to run away; just ROLLING coal black smoke. I kill the key; it stops.

Once stopped; truck will NOT refire until cooled down. Will spin/crank but not run or even try to hit.

When key is turned to "ON' position; all bulbs check; Glow plug lamp comes on, the drivers run too long and the lamp remains on. (This is right after its "died"). Upon cool down (approx 1.5-2hrs) if you cycle the key three times (on-off-on-off-ON) on the third ON sequence the Glow plug lamp will illuminate normally and go off (as it should in warm weather). The truck will start and run normally.

Last night that start and run was only good for Two miles; just enough to get it off the side of the road and into a parking lot. It is VERY accurate in its repetition sequence of how it dies. After the 2mile jaunt last night it did the exact same sequence before I had to cut it off in the parking lot.

Noone seems to have any answers at this point. Other than checking the FICMM harness and PCM connections; it appears that I will be going to the dealer. I spoke with the tech today and he stated that he'd never heard or had one do this so he's lost at this point as well.

The truck has 14k miles; has had oil changes at 3k miles or less with Motorcraft filters; never had a trailer behind it or a load in the bed. Fuel filters replaced at approx. 4k miles with Motorcraft units as well. Running name brand diesel from a clean station with the Motorcraft/Stanadyne Cetane booster.

Any help would be greatly appreciated

[doubledrop]

to be honest, I would just let the dealer warranty work take care of it instead of throwing money at it yourself. I have never heard of anything like that happening on a 6.0??? Maybe someone like Scuffy will give you something.

[mblgjr]

Yeah; that seems to be the general consensus everywhere is that nobody has heard of this or anything similar.

[Evil Eye]

wow, that sounds like quite a headache. Keep us posted on what the dealer technician says. Scuffy or one of the other techs should be along shortly...

[SCUFFY828]

being its an 05 has any repairs been done internally inside the engine , like stc fitting at back of pump, has high pressure oil sytem leak test been run, sounds to me lke there is a leak in the high pressure oil system

[mblgjr]

Originally Posted by SCUFFY828

being its an 05 has any repairs been done internally inside the engine , like stc fitting at back of pump, has high pressure oil sytem leak test been run, sounds to me lke there is a leak in the high pressure oil system

Sorry I haven't updated here.

Additional code P0606 was found. Deemed to be PCM fault/failure. More details below.

If it was leaking STC at the pump...it would go lean. From what I understand it would lose oil pressure and go LEAN. Its going rich to the point that it RUNS AWAY(revs to redline uncontrolled) (richly) all on its own.

AND I put the TSB for the STC kit on a while back. Put the new fitting; bracket/gaskets/etc. The original did not fail; I just put the new kit on for preventive maintenance. Truck only has 14k miles; never towed a trailer...def. hasn't had a hard life.

It also repeats; VERY repetitive each time; with shorter and shorter timespans between each occurrence. Last thing it did was a runaway in the dealer service bay. The tech had walked off and I happened to be next to the truck and was able to kill the key. He was within earshot and heard it; said he thought I was revving it....I said nope! She did it all on her own.

Tech wrote Ford through their network; their answer so far is to replace the PCM. Waiting on it to get here and see how it turns out.

Will update upon completion.

Hopefully there won't be another Found On Road Dead situation.

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Last edited by mblgjr : 08-18-2008 at 11:18 AM.

[SCUFFY828]

if stc bracket has been installed thats fine , i dont get the goin lean thing , thats oil pressure , not fuel , but whatever , a p0606 is internalpcm failure , replace pcm , thats correct

[mblgjr]

Originally Posted by SCUFFY828

if stc bracket has been installed thats fine , i dont get the goin lean thing , thats oil pressure , not fuel , but whatever , a p0606 is internalpcm failure , replace pcm , thats correct

This is just from my understanding of how the injector system operates and reports from the observations of other individuals that have had a HPOP system leak or failure.

Because the injectors are HP oil based/actuated; when the HPOP leaks and can't build pressure; the injector can't operate fully (or at all) thus it doesn't deliver the proper fuel load (thus going lean) irregardless of the fuel pressure.

[forddieseldoctor]

taken right out of the pced book for your truck: AT5 DIAGNOSTIC TROUBLE CODE (DTC) P0148
Possible causes:
Fuel quality
Crankshaft position (CKP) or camshaft position (CMP) signal noise
Retrieve and record all engine and transmission DTCs.
Is DTC P0148 present?
Yes:
CARRY OUT a drive cycle. REFER to Section 2 .

REFLASH the PCM. If DTC P0148 is present again, INSTALL a new PCM.

[mblgjr]

Just to update...

The main PCM died. No other sensors were out of range and there have been no issues since the PCM was replaced.

All seems well for now...I'm holding my breath on any future issues.