Hi all

2004 6.0 auto 4x4.

Issue is intermittent stalling or almost stalling. There is nothing consistent about it. wet, dry, slow fast, sometimes will go a week without incident, others 5 or 6 times in 10 minutes.

If the accelerator is 1/4 or more depressed, it will cough, wif and glow plug indicator illuminate and the truck turns into a dog. Meaning I need to almost hold the accelerator to the floor to keep it moving. Happened on the highway last week, dry cold conditions, pulled over shut it down, restarted and it sounded like an alcohol funny car really rough coughing idle, whole truck was shaking. When it does this, the pids on the SGII , except for ect and a few others, stop working. as in the pid comes up with no value beside it. shut it down, cycle the key a few times wait 30 seconds and it will start right back up like nothing happened. Runs normal, all pids working again.

last night plowing in 1 25' driveway it stalled 5 times. was running well idling normal all pids normal no codes. like I turned the key off, no warning just off. sometimes fired back up and ran normal, others would be the really rough coughing idle. shut it down wait start it back up , runs fine till the next time.

there is no water in the fuel, dropped and cleaned the tank 2 weeks ago(nothing in it) half a$$ed cleaned the hfcm with carb cleaner(did have ****e in it), oil, oil filter, fuel filters 2000 miles ago.Pulled the fuel heater relay, no change.

believe it to be electrical, I have wiggled the harness around a little, but am looking for suggestions as to WHERE to look. new computer dosen't have office so I can't look at Mark's spreadsheets

 

There is a wire chafe thread in the 6.0 tech folder that gives the common locations (with pic's). Also check next to the drivers side top shock mount.

 

There is a wire chafe PDF in the tech folder that shows common chafe points. That would be a good place to start.

 

Bah you beat me to it lol. I didn't see your post before I posted.

 

trying to type fast to keep warm--LMAO.

 

Just went through the same thing with mine for 2 years. Had Ed FICM Repair update my FICM. When I got it back, that is when the problem started. Finally got a p2285 code last week and that is the ICP sensor code. It was NOT the updated FICM from Ed that was the problem. So after $165 and 1.5 hours on the ground changing the ICP, problem solved. Hope your ICP is in the passenger valve cover. If you can reach the connector and it is oily, the ICP is the problem. I have replaced 2 in 115k miles.

Ed

 

thanks for the quick responses!

well it finally threw a code (any idea why it took so long?) icp out of range, picked up a new one $127 at Ford, they had the harness too, $67 bucks, which is nuts. See if that was a symptom or the cause.

 

What code?

 

Just wondering if you checked the wires for chaffing as suggested?

 

I think it was p2285.

I did check the harness. started it up and pushed and pulled wires. did not replicate the problem. didn;t have time to unplug and open up the wire loom, too much life happening.

 

Is your ICP under the turbo? If the harness is oil contaminated I'd change it otherwise I'd change the sensor and drive it before changing the pigtail.

 

it's on the valve cover, the plug was not oil contaminated, neither is the harness. changed the sensor see how it goes. Got 12+" of snow coming tomorrow, gonna suck if it keeps stalling...

 

well not a single hiccup during 9 hours of plowing yesterday. hopefully the new icp took care of it.

thanks Ed and crew, you guys are what this a great forum

 

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fing truck wouldn't start, just crank. so because I'm feeling ornery I just kept cranking wihth the gas to the floor. finally started, ran like the obamacare website. stalled a few times. restarted. sel is lit. p2285 . left it running so I could try to start the snowblower (which wouldn't start) guess what happened?

that's right it stalled! started right back up, stalled 3 times. couldn't make 1 pass in my own driveway .

guess I'll try to get to ford and get the harness. looking forward to burning my fingers and freezing my backside off in the driveway. ooohh joy it's up to 21* , guess it won't be that bad.

REALLY starting to miss the 8mpg at it's best v10 gutless turd, at least it always started even if it couldn't get out of it's own way...

 

well, got the icp harness.

NO F'ING DIFFERANT!

did throw a new code p2167 crankshaft position output circuit open. sg2 says syc is 1.