2V V10 Rough Idle
Thread Starter
|
Mountain Pass
Joined: Jul 2015
Posts: 116
Likes: 7
Thread Starter
|
Mountain Pass
Joined: Jul 2015
Posts: 116
Likes: 7
I love the enthusiasm lol unfortunately this project has to take a back burner again, I have the O2s ready to install, just have to find the time to do them! As soon as I do I will report back. I figured I’ve been plagued by it for almost a decade, a few more weeks won’t kill me haha
Mountain Pass
Joined: Sep 2008
Posts: 129
Likes: 68
From: Coastal VA
I have a 2005 2 valve V10 that with the idle drifting up and down by 50 - 100 RPM every couple of seconds. I cleaned the throttle body (it was all coked up) and this cleared up most of the issue for my engine.
2nd Gear
Joined: Nov 2024
Posts: 2
Likes: 1
You have my truck
I have the same issue with my truck and have done aa that you have with the same results, none. the only thing that comes up is Lean bank 1 and 2. At one time with the analyzer hooked up it showed misses, till I got to 2600 rpm, then the misses stopped. Still missed at idle, but no longer showed up on analyzer. I am new to the forum not to the issue , wanted to let you know you are not alone, I know that is not help you , but I am not giving up on this truck or issue one day one of us will find it and we be better off.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 6 Best Deals Available on New Fords & Lincolns Right Now
Brett Foote
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Verdad Gallardo
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
Fleet Mechanic
Joined: Feb 2011
Posts: 1,812
Likes: 88
From: Thousand Oaks, CA
If it's lean on both bank 1 & 2 there's a good chance the problem is between the air intake and the intake manifold.
Ours was a soft PCV hose that would intermittently cause a vacuum leak.
The IAC valve controls all airflow into the engine at idle.
The MAF could be dirty/faulty.
Maybe a leak in the air duct between the MAF and the throttle body.
There might be a lot of sludge under the throttle body butterfly that can be cleaned.
Ours was a soft PCV hose that would intermittently cause a vacuum leak.
The IAC valve controls all airflow into the engine at idle.
The MAF could be dirty/faulty.
Maybe a leak in the air duct between the MAF and the throttle body.
There might be a lot of sludge under the throttle body butterfly that can be cleaned.
2nd Gear
Joined: Nov 2024
Posts: 2
Likes: 1
If it's lean on both bank 1 & 2 there's a good chance the problem is between the air intake and the intake manifold.
Ours was a soft PCV hose that would intermittently cause a vacuum leak.
The IAC valve controls all airflow into the engine at idle.
The MAF could be dirty/faulty.
Maybe a leak in the air duct between the MAF and the throttle body.
There might be a lot of sludge under the throttle body butterfly that can be cleaned.
Ours was a soft PCV hose that would intermittently cause a vacuum leak.
The IAC valve controls all airflow into the engine at idle.
The MAF could be dirty/faulty.
Maybe a leak in the air duct between the MAF and the throttle body.
There might be a lot of sludge under the throttle body butterfly that can be cleaned.
Thread
Thread Starter
Forum
Replies
Last Post
ScottW123
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
22
Jan 30, 2012 09:51 PM