weird tranny shifts

[B--S]

well my tranny is making weird shifts.

1^2 is good
2^3 is good
3^4 waits 3-400rpm higher to shift
4^5 waits 3-400rpm higher to shift


basically between 30 and 50 mph under "normal" acceleration it shifts higher than normal. coasting downhill it also upshifts and uses the tranny to brake which i never did before. and no it isnt in tow/haul, it feels like it though.

when the engine is cold it shifts fine, when the truck is accelerated using the cruise control "accelerate" switch it shifts fine. under hard acceleration it seems to shift fine but a couple times it will hang up in a gear.

i changed my fuel filter thinking it was the cause. both the oil and AT fluid are pretty fresh too.

still shifts weird after 2 weeks and noticed about 20-30 miles less out of a tank due to the high revving :S

[blackdeath]

level is good right? when hot. if low even a bit sometime it can give you really weird symptoms.

[B--S]

nope she's full of fluid and bright cherry red. im taking it in to get some front end work, might get them to check some codes on it to see why its acting up, it may need a new filter though. i believe they only replaced the fluid when the torque converter cracked.

[B--S]

well i got it in and "apparently" my k&n filter oil had gunked up my MAF sensor causing the engine to store a code and drop power. the tech cleaned it out and instantly the shifts feel more solid, but there is the odd time it still runs "fast" but it is probably still relearning

[usafracer]

Give it at least 500 miles to relearn.