Rough running problem
Thread Starter
|
Senior User
Joined: Sep 2005
Posts: 209
Likes: 0
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
Likes: 27
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.
Senior User
Joined: Aug 2012
Posts: 168
Likes: 0
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.
Thread Starter
|
Senior User
Joined: Sep 2005
Posts: 209
Likes: 0
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
Thread Starter
|
Senior User
Joined: Sep 2005
Posts: 209
Likes: 0
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: 15,369
Likes: 121
From: Stuttgart, Ar
Trending Topics
Thread Starter
|
Senior User
Joined: Sep 2005
Posts: 209
Likes: 0
From: Montague,ma.
Even though I ran Hot Shots Secret through it all summer?
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Hotshot
Joined: Dec 2003
Posts: 15,369
Likes: 121
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?
Thread Starter
|
Senior User
Joined: Sep 2005
Posts: 209
Likes: 0
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: 15,369
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?
Thread Starter
|
Senior User
Joined: Sep 2005
Posts: 209
Likes: 0
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.
