2350 fuel pressure decay Fault code 4726

[Rawze]

(02-21-2021 )SemiSweet Wrote:  I am positive on the rear end ratio . Insite also shows 3.73.

ahh.. I see it ( I got curious, so I looked again). you have 2 settings in your for 2 diff axle ratios.
   



most trucks I see only have this as a single setting (the other one mentioned above).

just for a reference: On mine, both those settings show 3.5498 and the other setting shows this too. I have 3.55's in mine and that setting has never been adjusted since the truck was new.



even so, 3.70's is still a bit tall for what your hauling.