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No codes showing good fuel pressure never below 10psi reset apps and still know different, any ideas does it under load more than if no load is present.

RETOOC

When was the last time you changed your fuel filter? Mine was missing when pulling on the hills and in the lower gears when plowing going up hill. Putting in a new fuel filter made the truck work better and the engine even is quieter when running.

Retooc

99 cummins

I had this same problem when starting in 1st and 2nd gear a few weeks ago, next day it was all better. But I couldn't make this truck tale off from a stop without kickin and buckin. This is with less than a 1000 miles on a new filter, good fuel pressure and pulling an empty trailer. Just as sudden as it came on it went away and hasn't done it since.

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I have good fuel pressure at the vp, just unhooked my ez and it doesent seem to do it now could it possible be bad.

phox_mulder

Could be, but more likely would be the connections.

Clean them up and reconnect and see if it fixes it.
If it does, slap a little dielectric grease in there to keep future moisture out.

If it does end up being the EZ, Edge is pretty good with customer service.


phox

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Now truck seems to buck under heavy acceleration in 5th and 6th gear without fueling box, could the apps be going bad?