I had my battery unplugged, and my cluster unplugged and now ive got a P0315 came on last night, on my second drive after the cluster was plugged back in. I noticed the truck was running fine, but it felt like the trans was holding the convertor while i was coasting on the highway, causing a light engine braking.

says crankshaft system not learned or something like that. Anything i should be concerned about?

 

Found this.

https://www.f150online.com/forums/v8...944-p0315.html

http://www.gearchatter.com/viewtopic11737.php

 

interesting it talks about key being on until draining the battery. I did have the battery unplugged, and turn the key on to remove the key tumbler from the column during my work.

Also related/unrelated:
Just cleaned my K&N saturday
I disconnected the electronics in the column shifter, which is just the OD off switch and light. And it is still disconnected.

 

Well I sure as heck can't help with the troubleshooting, but I wouldn't think what you've done with the shifter swap and filter cleaning would have an effect towards the code you've pulled.

 

I got the code after pulling battery again, and now that external link is down. Im trying to remember what i did to relearn it last time.

Something like 70-0 coasting to a stop?

any help here guys?

 

i have read 60-40 3 times...here is one that i read.

https://www.f150online.com/forums/1543208-post4.html

 

thanks for the additional in house link i will try it tomorrow.

Truck drives great, just the engine is being held onto by the trans on decel, like a soft engine braking from 70-50 and then lets go and coasts normally from 49 and slower.

 

Any luck Pat?

 

took two or three tries of the light coming back but i think i finally got it.

Not sure if it has to simultaneously relearn the Jmod, and other mods as well which makes it harder for the PCM.

I drove about 20 miles today total, with two highway cruises (with coasting decel), and no light yet

 

Glad to hear, keep us updated