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Weird trans problem...
I just had my truck tuned with HP Tuner. Couple days afterwards the tranny quick shifted hard to second then real quick to third with hardly no throttle. Then i don't have overdrive, it won't shift down to second by itself, and no first whatsoever. :confused: Cut the truck off, crank her up and she's back to normal.
Any ideas?
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computer may have been "learning" or possible safe mode. not sure though
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Hmm... I don't know. See we pull a boat and it aint good to be starting on a hill in second, much less 3rd sometimes. Get tired of cutting the truck on and off. :argg:
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... Anybody else with any ideas? Come on now, know this aint a first..
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Go back and fix the tune?
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What changes were made in Hp Tuners to the tune or trans?
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If the tranny overheats it will put itself in safe mode sometimes and be hung in 3rd. Unhook the battery for a min or two. That will clear the code
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For normal driving he just increased pressure very little.
Tow/haul he left 25% TM and increased line pressure a little more. Just a medium tune on the motor though.
How does this abuse mode work?
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There are two topics. I replied in the other. Maybe a mod can merge them.