service engine light

[jared1]

i need help figuring this one out. when im driving down the road i sometimes get my service engine light and my truck starts running as if a few cylinders arent firing. or like the timing is off? but if i turn the truck off and then back on it runs normal. and then a couple days later it will do it again. any ideas??

[dhanna6powerstroke]

Originally Posted by jared1

i need help figuring this one out. when im driving down the road i sometimes get my service engine light and my truck starts running as if a few cylinders arent firing. or like the timing is off? but if i turn the truck off and then back on it runs normal. and then a couple days later it will do it again. any ideas??

Check it for codes and see which cylinders are misfiring. I'm betting you are having an issue with the harnesses under the valve cover on one side

[f250ghost]

What's the info on your truck? Year? Engine? Mods? Might be able to help you with that info man. I'm gonna guess it's a 7.3L since it's in the 7.3 Section...but try checking out the CPS first and go from there. Definitely wanna get the codes pulled if you can get a good scan tool hooked up to it. Probably one NOT from AutoZone or anything like that...they don't usually pull codes off these trucks for some reason...

[jared1]

i have a live wire in my truck so i will try to pull some codes off of it and post them. and yes its a 2000 7.3

[jared1]

i finally got the codes off my truck and theres a few. P0603, P1316, P0470, B1100

hope some of yall know what these mean

[NoRalPh]

Google those numbers It's the Greatest resource for codes (skip the first one, 603 just means the batteries were disconnected at some point)

[dhanna6powerstroke]

P1316=IDM detected fault
P0470=Exhaust back pressure sensor circuit malfunction
B1100=Doesn't exist from what I can find

[Goose]

do you have this thing chipped ?

[jared1]

i have a live wire on it but all im running is the street setting. i dont ever change it to other tunes. i just want the fuel economy. its been on there a while and this is just starting. whats the idm?? forgive my ignorance.

[jared1]

ok from what i have read i think my problem is the wiring harness under the valve cover is coming loose. that sound right to you guys??