running rough
Thread Starter
|
Senior User
Joined: Nov 2009
Posts: 172
Likes: 0
running rough
MY truck runs a little rough taking off and idling if i give it a little its not smooth.
I believe that is injectors. But now going down the road it starts cutting out like it wants to cut off but it doesnt. If I put the truck back to stock programm it doesnt cut out but it still runs rough. My questions is do you think the programmer is the culprit or the injectors?
I have sct with tunes by eric for over a year now. 430k stock ficm and turbo
I believe that is injectors. But now going down the road it starts cutting out like it wants to cut off but it doesnt. If I put the truck back to stock programm it doesnt cut out but it still runs rough. My questions is do you think the programmer is the culprit or the injectors?
I have sct with tunes by eric for over a year now. 430k stock ficm and turbo
Posting Guru
Joined: Jun 2006
Posts: 1,590
Likes: 0
You have 430k miles on your truck? Wow. Congrats. 
As a follow up, why would you think it was the programmer if you have had it for over a year and you're just now experiencing this issue? Hopefully someone will chime in and tell you more about what it is.
As a follow up, why would you think it was the programmer if you have had it for over a year and you're just now experiencing this issue? Hopefully someone will chime in and tell you more about what it is.
Lead Driver
Joined: Feb 2011
Posts: 8,241
Likes: 155
From: L.A. (Lower Alabama)
Sounds like some testing is in order. Contribution/balance test wil zero in a particular cylinder(s) that may be causing issues. Dealership can do this or check your local FTE chapter for someone with AutoEnginuity on a laptop or snag it from RiffRaff for about $350.
The bubble test can help isolate injectors if they are leaking cylinder compression back into the fuel supply system.
Fuel pressure test will check HFCM and regulator for proper pressure. Speaking of that do you have the updated (blue) spring in the regulator? I'm not a fan of throwing parts on a vehicle for troubleshooting but I would make an exception on that. It' inexpensive, fairly quick and easy to install an has several benefits.
FICM voltage ok?
Batteries load tested?
Have you tried fresh fuel filters? They may be up to date/miles but a bad tank of fuel can trash them.
The bubble test can help isolate injectors if they are leaking cylinder compression back into the fuel supply system.
Fuel pressure test will check HFCM and regulator for proper pressure. Speaking of that do you have the updated (blue) spring in the regulator? I'm not a fan of throwing parts on a vehicle for troubleshooting but I would make an exception on that. It' inexpensive, fairly quick and easy to install an has several benefits.
FICM voltage ok?
Batteries load tested?
Have you tried fresh fuel filters? They may be up to date/miles but a bad tank of fuel can trash them.
Thread Starter
|
Senior User
Joined: Nov 2009
Posts: 172
Likes: 0
Trending Topics
Certified Thread Hijacker
Joined: Aug 2001
Posts: 14,441
Likes: 59
Cam and crank signal codes, interesting.
Did the truck stall and die at any point?
Extended cranking time?
Josh
Did the truck stall and die at any point?
Extended cranking time?
Josh
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Certified Thread Hijacker
Joined: Aug 2001
Posts: 14,441
Likes: 59
Just so things are clear.
Josh