Rough running problem
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Senior User
Joined: Sep 2005
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From: Montague,ma.
Rough running problem
The hits just keep on coming with this truck, both minor and major.
Some of you may remember my thread on battery replacement a couple weeks ago. Well, now I've got a different problem.
Lately, when I cold start the truck and drive it, it stumbles and runs like the engine is missing until it warms up. So, I did a little research and decided, before I posted, I'd check the FICM voltage.
The instructions in the tech folder say to unbolt the coolant reservoir and "...move it forward and to the right" and that it was not necessary to remove any hoses. Not happening on my truck. I can move it about 2-3" forward but it will not go to either side. Consequently, I'm unable to access the inspection plate on the FICM.
So, once more I ask the brains of FTE, What am I doing wrong here?
Some of you may remember my thread on battery replacement a couple weeks ago. Well, now I've got a different problem.
Lately, when I cold start the truck and drive it, it stumbles and runs like the engine is missing until it warms up. So, I did a little research and decided, before I posted, I'd check the FICM voltage.
The instructions in the tech folder say to unbolt the coolant reservoir and "...move it forward and to the right" and that it was not necessary to remove any hoses. Not happening on my truck. I can move it about 2-3" forward but it will not go to either side. Consequently, I'm unable to access the inspection plate on the FICM.
So, once more I ask the brains of FTE, What am I doing wrong here?
I'm hitting easy street
Joined: Nov 2009
Posts: 6,395
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From: Central Oregon
Start at 1:10 of this video, you do need to disconnect one hose. And, you will need a second person to help with testing. Also. put a piece of tape around the probe to help keep from shorting it against the case of the FICM. When you have the probe in place, have the other person turn on the key. A FICM can go from 30v to 48v in about 10 seconds. It takes longer than that to go from cab to probe FICM and you might miss this issue.
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Joined: Aug 2012
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From: Cleveland, Ohio
There should be two small bolts that hold the degas bottle in place from the topside? If you need, you can remove the two thin hoses coming in and move them out of the way and it should allow you to wiggle the bottle and move it pretty easily. I changed the FICM this way without removing the bottle entirely.
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Senior User
Joined: Sep 2005
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From: Montague,ma.
Start at 1:10 of this video, you do need to disconnect one hose. And, you will need a second person to help with testing. Also. put a piece of tape around the probe to help keep from shorting it against the case of the FICM. When you have the probe in place, have the other person turn on the key. A FICM can go from 30v to 48v in about 10 seconds. It takes longer than that to go from cab to probe FICM and you might miss this issue.
Ford 6.0 FICM Testing & Removal Instructional Video - YouTube
Ford 6.0 FICM Testing & Removal Instructional Video - YouTube
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Senior User
Joined: Sep 2005
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From: Montague,ma.
Ok. Disconnecting that one hose made all the difference. Checked the voltage and it was a consistent 48.4v during the entire test.
I put Hot Shots Secret in at last oil change in May. What could be causing the stumbling? Only seems to happen when the truck is cold. Warmed it up this morning for 15 minutes before driving this morning and it ran fine.
I put Hot Shots Secret in at last oil change in May. What could be causing the stumbling? Only seems to happen when the truck is cold. Warmed it up this morning for 15 minutes before driving this morning and it ran fine.
Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
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Senior User
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From: Montague,ma.
Even though I ran Hot Shots Secret through it all summer?
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Hotshot
Joined: Dec 2003
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From: Stuttgart, Ar
HSS is a bandaid at best. It won't fix a mechanical problem. It might help for a while. Polishing the spool valves might help.
Do you know what flash is in your truck? It's possible a FICM flash might fix a lot of it. What oil are you running? Mileage on your injectors?
Do you know what flash is in your truck? It's possible a FICM flash might fix a lot of it. What oil are you running? Mileage on your injectors?
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Senior User
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From: Montague,ma.
HSS is a bandaid at best. It won't fix a mechanical problem. It might help for a while. Polishing the spool valves might help.
Do you know what flash is in your truck? It's possible a FICM flash might fix a lot of it. What oil are you running? Mileage on your injectors?
Do you know what flash is in your truck? It's possible a FICM flash might fix a lot of it. What oil are you running? Mileage on your injectors?
Running Rotella T6 5W-40 syn. Have since I bought the truck.
Injectors have not been changed since I've owned the truck. No idea what the previous owner did. Trucks got around 93,000 mi.
Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
If it was reflashed in 2012 it's got the latest flash. As you said, you have no idea what the PO did. You're only recourse is to take it to a competent 6.0 TECH and have a power balance test run when it's cold.
Have you code scanned the truck?
Have you code scanned the truck?
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Senior User
Joined: Sep 2005
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From: Montague,ma.
No idiot light so I assumed it hadn't thrown a code. If I'm incorrect about that I can have it checked tomorrow.
