Cylinder contribution test
Thread Starter
|
Posting Guru
Joined: Aug 2007
Posts: 1,601
Likes: 0
From: Cato Arkansas
Cylinder contribution test
I got my scan gauge back and working and tried a contribution test and I'm getting a po113 and po603 code i looked up the code and
The po113 is a air intake code and the po603 is a kam code but I got no Idea what they mean. Any ideas? Thanks
The po113 is a air intake code and the po603 is a kam code but I got no Idea what they mean. Any ideas? Thanks
Post Fiend
Joined: Sep 2003
Posts: 6,096
Likes: 27
From: Mesa AZ
You can unplug a lot of things...the PCM still expects to see that sensor hence the code. Most folks leave the sensor plugged in and tie it off somewhere near the air filter element...
Thread Starter
|
Posting Guru
Joined: Aug 2007
Posts: 1,601
Likes: 0
From: Cato Arkansas
Ok so been doing some reading and from what I have discovered is the 94-97 contribution test you can hear and feel the cylinders cut out. On the. 99 and up its a silent test. I'm use to wrenching on the obs so that why I figured the test didn't work. I find it odd the a truck with 378k miles passed both the buzz and cct.
Postmaster
Joined: Apr 2012
Posts: 2,613
Likes: 8
From: North Georgia
Its not odd at all. These engines are well known for running like swiss watches for 500+ k miles.
Mine is at 414k miles still ticking along with 4 of her factory injectors. Granted... its time to replace them... but she starts up in 30* mornings like a champ.
Mine is at 414k miles still ticking along with 4 of her factory injectors. Granted... its time to replace them... but she starts up in 30* mornings like a champ.
Trending Topics
Butt-Head
Joined: Apr 2004
Posts: 9,457
Likes: 2,938
From: Reed Point, MT
Why do you say that?
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
Thread Starter
|
Posting Guru
Joined: Aug 2007
Posts: 1,601
Likes: 0
From: Cato Arkansas
I just figured that the injectors would not be balanced with that many miles. I was gonna use a failed comtribution test to talk myself into some sticks but that didn't work so now I gotta find another way to justify them
Cargo Master
Joined: Jan 2009
Posts: 2,800
Likes: 31
From: OKC, OK
Ok so been doing some reading and from what I have discovered is the 94-97 contribution test you can hear and feel the cylinders cut out. On the. 99 and up its a silent test. I'm use to wrenching on the obs so that why I figured the test didn't work. I find it odd the a truck with 378k miles passed both the buzz and cct.
Butt-Head
Joined: Apr 2004
Posts: 9,457
Likes: 2,938
From: Reed Point, MT
..because neither a "buzz test" or "contribution test" have a whole lot to do with how "balanced" the injectors are.
Thread
Thread Starter
Forum
Replies
Last Post