2002 F250 7.3 stalling, or no start.

[12 Point]

It was cutting off on me for about two weeks, went and had the camshaft recall performed. It ran good for about 4 days then started it again but seems to be getting worse. Now when it stalls on me the wait to start light remains on and it will not start until the switch is cycled several times. When the engine is cold it seems to always cut off at the same temp. warming up. I have a good scanner and retrieved these DTC's. Hope someone can help me pinpoint the problem. I can fix helicopters but this is a different ballgame for me.Please, any suggestions would be helpful.
KOEO P1218 Cyl. Iden. Stuck High
KOEO Buzz Test P1218 same as above
KOER P0284 Cyl. #8 4.6% contribution fault

[12 Point]

Has anyone had a superchips chip go bad, not a programmer but an actual chip? I removed it and the truck seems to be running good now. I would like to know if anyone else has had a problem with theirs so I can say for sure thats what the problem was. Thanks for any replies!!

[PWRSTROKETHIS]

I can fix helicopters

What type of helo do you work on Im a CH47 Chinook mechanic!! Just kind of wondering? About your truck stalling out this guy is right about the programer thing they can cause that to happen. Heard of the camshaft probleam did you have them replace the sensor too?

[12 Point]

I worked on uh-60s in desert storm, US Army, got out in 1991 because of the Iraq situation. I presently work on Eurocopter AS-350BA, B2 and Bell 206LongrangersL1,L3, and L4 with Omniflight Helicopters in Newnan GA. I had the cps relaced about 1 week ago and it did not help.Thanks for all you do for us and our country!!!!!!

[PWRSTROKETHIS]

AND THANK YOU FOR ALL YOU HAVE ALL READY DONE FOR OUR COUNTRY!!!! The truth is Tangos and Uniforms are natral born enemys but we all learn to get along when we get to the big sand box they call the middle east! Thank you once again for all you have done!!

[Deeslfxr]

Thanks to both of you guys for sticking your necks out for us! X2 on a chip failing. You wouldn't be the first to have a chip go bad by a long shot. One question though, the codes you listed, are you still getting them with the chip removed?

[OregonStroker]

mine did the same thing. it was the pig tail that the CPS plug runs to. had to go to ford and get a new pigtail and solder it on. fixed it.

[12 Point]

Since I removed the chip and cleared the codes I have drove the truck for 2 days now with no problems, seems to be running fine. I will drive it tomorrow and see if it will throw some more codes at me. The only thing I did notice was it still gives me a #8 cyl. contribution fault of 4.6 0/0. It runs smooth and have talked to a few guys that say their truck gives #8 fault also and not to worry about it, has anyone else heard of this? I will post tomorrow after i pull codes and let you know!

[tomspear]

My truck (2001 F250, 272k) was also showing a cyl #8 contribution fault on AE with a dusted motor (75psi on cyl #8, approx. 350 avg. on the other 7 cyl).

I ran the test on my other truck (2000 F350, 345k) and also got cyl #8 cont. fault. This truck is 100% stock and runs good. I did not do a compression test on this truck.

Neither truck was showing a MIL.

I bought a replacement engine from a late 99 E350 Van with 245k on it. I drove it before the engine was pulled and it ran strong (totally stock). I wasn't sure if AE would work on it, but I ran both "buzz" and "contribution" tests and both were fine with NO cyl. #8 fault. The (VAN) motor has all 8 AD injectors, the trucks have the AE in cyl #8.

I hope to have the (VAN) engine installed this week and will probably be posting lots of questions if I have problems (I'm totally new to this 7.3 world).

I am very grateful for the vast amount of knowledge on this forum.

I have read on this forum and others that cyl #8 fault is somewhat common.

[frenchfry]

I have seen that the chipps make poor connections and cause that problem.