Another rough idle and no power 2004

[section525]

EDIT: Turned into a no start issue. Went out to show a mechanic buddy the symptoms and now it will not start.

The Super Dooty has been running great for a couple months ever since I threw on a new alternator and starter. Well, until today.

On the way home from work I noticed an unusual ticking sound coming from what sounded like the drivers side. It would be more noticeable at lower speeds/rpms and would come and go. Got home and immediately left again to pick up the kids. On the way home from getting the kids it began to idle very rough. Then nearly home it lost power and felt as if it was going to stall. Made it home fine (3-4 mile trip) and tried poking around with my limited knowledge.

FICM read at 48.1V while acc on, and 48.0V when cranking and running. Fuel filters and air filter were changed probably 4k ago. Oil changed 5k ago. No codes at all. Actually while hooking up my scanner I discovered fuse 12 was blown giving me no power to the odbii port. Not sure how long that has been going on.

Motor is completely stock and was courtesy of Ford 40k miles ago.

How should I proceed next? The ticking sound I heard leads me to think maybe injector(s). Truck has 130k on it. Just fueled up this morning at AM/PM.

Video of the experience.

F250 6.0L Idle/Power Issue - YouTube

[Motorboy8769]

Hey I'm not extremely experienced in this but while deployed we had a 6.0excursion and we drove through a giant puddle with water up over the fenders and ran really rough from getting wet. To. Me it sounds like you have a cylinder not firing any dealership or mechanic with a tech II can see if you have had any misfires but at the same time that should throw a code. Sorry I couldn't offer much help


Sent from my Autoguide iPhone app

[section525]

Thanks for the reply. I agree it does sound like that. Haven't driven through any puddles this year. No rain!!

Also, there was no noticeable smoke from the exhaust.

[section525]

Turned into a no-start issue. Won't fire up at all. Unplugged the ICP. Nothing. Investigating the IPR next.

[Motorboy8769]

Did you notice any white or blueish colored smoke when driving or trying to start

[HAM_RADIO_MAN]

No start issue? Look here.

Check out this link For great t-shooting tips.


Do you have anyway to check out Engine data like ICP and IPR. Any other fuses blown?
I know you said fuse 12,but here is and idea since you said you didn't have power to the OBD2 port

Q: My message center says TBC fault and my truck won't start, why?

A: The most likely suspect here is fuse# 22 the engine control fuse is blown. The main suspects here are shorted trailer wiring, brake controller fault, Fan clutch or wire shorted, Exhaust back pressure sensor shorted That fuse supplies power to the PCM, GPCM, ICP sensor, fan clutch and MAF sensor. 6.0's are well know for wiring harness chafing and shorting. Some have reported the dip stick rubbing on wires has caused this problem as well. Some times this will prevent a code scanner from communicating with the PCM as it has no power.

[section525]

Originally Posted by HAM_RADIO_MAN

No start issue? Look here.

Check out this link For great t-shooting tips.


Do you have anyway to check out Engine data like ICP and IPR. Any other fuses blown?
I know you said fuse 12,but here is and idea since you said you didn't have power to the OBD2 port

Thanks! I'm working my way down the list. Currently I only have an Auteltech MS310 and I don't see any live link data regarding the ICP/IPR. I've been thinking about getting the Edge Insight. That'll read them, right?

All the other fuses check out.

[section525]

Also I noted that when checking out the harness to the ICP sensor all the wires are red. Of course its dark outside but I can maybe see a pink stripe on one. Do you know off hand which wires to test?

[section525]

After spending a little time tinkering with it this morning and trying to figure out how to hook up my fuel pressure tester (thats another story) I'm finding there is no fuel going to the fuel bowl. Fuel pump? What else if anything would cause that issue?

[section525]

More troubleshooting. Found 11V at the power harness to the HFCM. Check. Pulled the fuel supply to engine hose. Turned key to on. No fuel coming out. Placed my vac pump on the HFCM and it took less than 5Hg to pull fuel from the tank through the pump. So obviously I have no blockage at the tank.. or anywhere before the HFCM for that matter.

New fuel pump it is.