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Q: i have a few questions and descriptions of conditions about my automatic transmission id like to get answers to in general terms. i have a dodge 3/4 ton b250 van 318 cu. in. engine. the 3 speed with overdrive on the column automatic transmission has been rebuilt and stiffened/heavy duty parts installed about 2 years ago by the previous owner. heres some descriptions and questions. the trans. is slow to shift upwards in the gearing. low range really roars and i have to gently let up on the accelerator to get it to shift up. it then winds up again usually and i need to do another but smaller let up of the gas to get it to shift up into drive. it no longer will go into automatic overdrive but remains in drive. thats great for the mountains and hills around here but still something that isnt working properly. lol other than the aggravation of having to help it shift the rest of it is fine no grabbing jerking slipping or any indication of anything wrong other than the poor upward shifting. it does this harder when cold and easier when warm and run a while but is still winding out pretty good in the shift from low to d2 to drive. i dont have a tach so dont have any reading of that other than feel and ear. questions number one of course is what is the possible problem problems number 2 is the possible solution third is how expensive will it be. it seems to me that this isnt a transmission problem in the usual sense of transmission problems as there is no evidence of gearing damage etc. just poor shifting. am i wrong in thinking its something outside the trans. gearing and bands itself maybe such as a regulator valve or such -- ht .. .