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4r100 suddenly not changing to 4th gear
I got a 2000 7.3 excursion imported to norway, it have 245000 km on the odometer. Suddenly one morning it did not shift to 4th gear.
When pressing overdrive off button it stays in 3., when pressing again i get 4th on the tuner cts gryphon, but dont feel like its in 4th, i also dont get any enginebrake when it claims to be in 4th.
R,n,1-3 w/wo lockup works just fine. Any suggestions? Stuck valve, electronic device in the tranny(solenoid control)?
I tried to tune it back to factory program, also removed batteryconectors for 30 mins...still no good