Running to rich???
Thread Starter
|
Senior User
Joined: Jul 2007
Posts: 452
Likes: 0
From: Upper Pennsula Michigan
Running to rich???
I gotta 1996 f-250 460 v8..I have and air fuel mixture gauge and it has been running really rich...Is there any way that i can adjust the air fuel mixture??But i think mainly just the fuel???
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
What is the A/F gauge connected to? I hope you're gonna say it's own O2 sensor. There is no adjustment for A/F ratio on a fuel injected motor, you have to fix the problem that's causing it to run rich.
Senior User
Joined: Dec 2007
Posts: 128
Likes: 0
From: Florida
Yes Sir
I Agree With Conanski.
Your O2 pretty much operates your injectors Pulse and Duration , via the CPU.
But when they go bad normally the engine light will come on and the CPU goes into a preprogrammed back up Rich Run Mode.
But other things like the EGR can can effect you mixture via the O2.
I would trust the CPU's Self Circuits , Before an Aftermarkets reading
Pull the plugs.........See what they say
Your O2 pretty much operates your injectors Pulse and Duration , via the CPU.
But when they go bad normally the engine light will come on and the CPU goes into a preprogrammed back up Rich Run Mode.
But other things like the EGR can can effect you mixture via the O2.
I would trust the CPU's Self Circuits , Before an Aftermarkets reading
Pull the plugs.........See what they say
Thread Starter
|
Senior User
Joined: Jul 2007
Posts: 452
Likes: 0
From: Upper Pennsula Michigan
They say its good...I'm know what caused it to run rich but do not know how to fix it...The aftermarket throttle body is the problem..The and exhaust the headers didn't cause a problem now since i'm sucking more air in i guess they screw it up..
Thread Starter
|
Senior User
Joined: Jul 2007
Posts: 452
Likes: 0
From: Upper Pennsula Michigan
ok thanks guys after this tank of gas back on goes the stock one...I have pulled the codes and only one i get is 111 which is system pass...Could i by chance have to adjust my tps higher than .8 volts...Right now its set at .8 and i know it has to be between .8 and 1 volts..
Senior User
Joined: Dec 2007
Posts: 128
Likes: 0
From: Florida
Hummm
Originally Posted by Big_Man_Brad
They say its good...I'm know what caused it to run rich but do not know how to fix it...The aftermarket throttle body is the problem..The and exhaust the headers didn't cause a problem now since i'm sucking more air in i guess they screw it up..
I'm not sure how an aftermarket TB would richen a mixture.....I would think the aftermarket TB (and the Headers) would go more torwards the lean side.
And "what" says "it's" good?
The plugs are showing the aftermarket meter is reading correctly?
Where is your timing?
If I were to add a "leaning" componet(s), I think I would also lean torwards a more retarded setting.
Yet........ if your running rich
Trending Topics
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
You need to check more than just the closed positon on the TB, you should also make sure the voltage raises smoothly as the TB is opened and that the range is between 0.6 and 4.8v. Here's why. The computer interprets voltages below approx 1v as throttle closed, and somewhere above 4v as open throttle, and when the engine is at opertaing temp with the throttle in either of these ranges the computer switches to open loop. The fuel maps for open loop are richer than those for closed loop.
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
Thread Starter
|
Senior User
Joined: Jul 2007
Posts: 452
Likes: 0
From: Upper Pennsula Michigan
My timing is set at 17 degrees right now..I know that sounds high but no pinging what so ever under load...I'm going to call bbk performance and see whats up right after i make sure that tps has a smooth up and down voltage...
Thread Starter
|
Senior User
Joined: Jul 2007
Posts: 452
Likes: 0
From: Upper Pennsula Michigan
Ok so the tps is good...So i took the performance throttle body off and will see in a week or too if that was the problem...I also called bbk performance and they told me that they had no idea..So they said call where you got it from and get your money back...I than called performance center and they said that theres no way it could do that...So i guess i'm out 350 plus shipping if my old one works better...