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2003 7.3 4R100 issues
I am trying to diagnose and fix trans issues for a 2003 7.3 F250.
I have done a good bit of forum research here, PSN, powerstrokearmy, and FTE. I have come up with some helpful info but nothing conclusive.
-2003 7.3 f250
-Trans rebuilt approx. 3 years ago and Dacco triple disc converter installed
-Stock programming/no chip
-Beans injectors installed early this year and are stock size
-When in D, the truck will not move and will roll back if on a grade.
-When manually shifted into 1st the truck will shudder and ease forward like it as if the friction clutches are not totally engaged.
-When in R there is a hesitation and then the trans slams hard into gear.
-The OD light is NOT flashing.
-Will not start in D sometimes. Must be shifted into N.
-Trans fliud is at appropriate level and looks/smells fine.
P0605: internal ctrl module ROM error - i think this could be related
P0733: Gear 3 incorrect ratio - almost certainly related
P0541: Manifold intake air heater - i do not think this is related
P0476: exh press ctrl valve perform - i do not think thisis related
P1780: trans ctrl sw out of range - armost certainly related
-Clear all codes and attempt to drive. See what codes return.
-Calibrate the trans range sensor
-Check the TSS and OSS sensor and harness.
-Check all underhood connections.
-Check column shifter wiring for wear.
-Drop pan and look for clutch material.
-Flush with Cooler Cleaner, change filter and refill.
-Check PCM grounds.
-PCM not grounded well?
-PCM need reflash?
-If there is slippage, why is there no P1728?
I consider the shop that rebuilt the trans to be reputable. They rebuilt the E4OD in my 97 (mods in sig) in 2006, gave me a 3 year warranty and let me watch them rebuild it (just wanted to see how it was done). He upgraded the E4OD with 4R100 parts. I have since beat the crap out of the trans in my 97 with no issues whatsoever.
Please let me know if you see anything I should add/delete/modify in my current plan.
97 F350 CC 4x4 XLT Single Wheel - 3" DP, HPX mod, Shimmed FPR, Coon 10k, beans IDM, 3" down pipe, gutted EBPV, custom built 4R100 w/ Superior PressureRiser. Rosewood Diesel Stage 1's, TS 6 pos. chip - Stock, Valet, 50, 75, 100, anti-theft, tightwad mod, home built efuel.