WOT stutter
Thread Starter
|
Senior User
Joined: Oct 2005
Posts: 164
Likes: 2
WOT stutter
I was driving from Salt Lake City to Gillette WY (about 550 miles) and at the half way point when I floored it to pass a Semi my truck downshifted but stuttered at around 3500 rpm. It would go no higher. I pulled over, put it in nuetral and slowly reved it up to 5500. But when I floored it, it started to stutter again. I changed my fuel filter this past summer so that shouldn't be the problem. Any ideas? Thanks
Hotshot
Joined: Mar 2007
Posts: 10,101
Likes: 40
From: Pa
I'd scan the truck for DTCs. It is probably a missfire and may possibly throw a code.
When the last time your plugs were changed?
The fuel filter should be changed every 10,000 miles. The V10 goes through quite a bit of fuel. Clean the MAF every year.
When the last time your plugs were changed?
The fuel filter should be changed every 10,000 miles. The V10 goes through quite a bit of fuel. Clean the MAF every year.
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
Originally Posted by dkf
I'd scan the truck for DTCs. It is probably a missfire and may possibly throw a code.
https://www.ford-trucks.com/forums/5...t-come-on.html
Cargo Master
Joined: Feb 2004
Posts: 2,078
Likes: 172
From: Central Texas
Trending Topics
Post Fiend
Joined: Jun 2003
Posts: 5,643
Likes: 8
From: NE Texas
Originally Posted by mizzitch
a bad coil on plug tends to show up under heavy load -
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
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
Top 10 Ford Truck Tragedies
Joe Kucinski
Thread Starter
|
Senior User
Joined: Oct 2005
Posts: 164
Likes: 2
This is what confuses me. It seems to only do after it has been driven for over a couple of hours. When I left Denver yesterday morning everything was fine. Once I got home (7 hours later) I floored it to pass somebody and the engine began to stutter again around 3500 RPM. I think I might have to buy a programmer after all and see if any codes come up.
Sit. Stay.
Joined: Oct 2001
Posts: 18,308
Likes: 20
From: Washington State
Wow! 6 different suggestions!
Obviously the problem is a heat related problem since it only does it once the engine has been running awhile and the offending part has been working.
That rules out the fuel & air filters. Doubt it's the MAF.
Most certainly spark related.
Obviously the problem is a heat related problem since it only does it once the engine has been running awhile and the offending part has been working.
That rules out the fuel & air filters. Doubt it's the MAF.
Most certainly spark related.
Senior User
Joined: Jul 2005
Posts: 281
Likes: 0
Could very well be bad fuel pump. Lots of times they act up once run for a while. That would cause it to run fine at lower rpms, but then have a very lean mixture at wot. You could throw a fuel pressure gage on it and see if you can get it to act up while watching the gage. intermittent problems are a bear.
Thread Starter
|
Senior User
Joined: Oct 2005
Posts: 164
Likes: 2
Now that you mention it, it does seem like it is running lean in that condition. But then why would it rev up to 5000 rpm on the side of the road in Nuetral but not in gear on the Highway? Maybe because there is no load on the engine?