Join Date: Jul 2007
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spartan shifting problems
just loaded the 275 last week did the relearn , went perfect about three days later i get on it from a roll about half throttle to 45-50mph no problems....... stop a mile down the road idling in drive foot on the brake and i feel the truck shifting, try to take off and it feels like you are starting in third gear. cant manually shift down. put it in park, shut it off, re start the truck give it a run for the money it is fine !
drive it the rest of the week no problems........ end of the week i install the 310 do the relearn no problems goes great, drive it a little over the weekend........ this morning i get on it from a roll to about half throttle to 45-50 mph goes great , stop at the next light and the truck starts to up shift as im at the light with my foot on the brake not moving but you can feel it shifting?????? WTF????? manually shift to neutral leave it there about a minute and back to drive its fine...... untill you stop again. pull over shut it off re start it and its fine . no codes ,no nothing, does not feel like its slipping just downshifts as you stop and while you are stopped you can feel it shifting back up .
this only happened once each 275/310 almost exactly the same time frame after loading the tunes? truck is an 09 with 8,000 miles is this a glitch in the tunes? any ideas. less than a full tank of fuel through it with the 2 high hp tunes , about 6,000 miles on the 210 tune without a hiccup . im at a loss of what to do . dropped back to the 275 this afternoon did the relearn ....so far so good ..... whats gonna happen in three days?