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transmission shift issue under WOT after tire size change

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Old 03-31-2013, 08:31 PM
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No. 140 is still pretty cool. 160-170 is ideal..rpm is probably 2500 at 45-50mph in drive. Go to 3 and nothing. Go to second and then it drops down.
Old 03-31-2013, 08:32 PM
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I'll probably have to take it back to the tuner or run the truck over to RPM since there fairly local.
Old 03-31-2013, 08:48 PM
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I will always keep my trans at 140*. thats plenty warm. anyway 2500 rpm at 50 is high for cruising. if the tuner cant find anything id take a look at the servo.
Old 03-31-2013, 09:29 PM
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I agree. 140-150 is on the safe side IMO. But it needs to go back to the tuner for a couple other issues anyway. Hopefully its just on the tuning
Old 03-31-2013, 09:31 PM
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All tho I'm still under warrenty with the trans. Its just a hour and a half drive for me and I'd have to trailer it.
Old 03-31-2013, 09:54 PM
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I would see what the tuner says first. sometimes they will change something and not realize it. i know my computer is still locked on a dyno tune so it wont down shift from 3rd to 2nd under WOT but its still driveable. could i fix it? sure, but a t56 is actually waiting til it gets a little warmer to go in so i see no need.
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