2nd to 3rd Hits hard - Ford Powerstroke Diesel Forum
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post #1 of 1 Old 08-24-2013, 01:00 PM Thread Starter
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2nd to 3rd Hits hard

On my 08 I'm running the Spartan 310 and no matter how I open the throttle my 2nd. to 3rd. snaps and jars during the shift. From time to time if i WOT bleep or run it hard for a few......It will going into this limp mode like it's taking off from 3rd. I have to hit the tow/haul a couple of times or turn the truck off for it to clear. I'm told it's an adaptive trans but this is ridiculous. Is this a bad file from Spartan? My buddy has a Mini Max HotDamn 300 on his and it shifts smooth all the time. I'll be damn if I'm going to jack up a trans with a corrupt tune.

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