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gaugedearguy 12-02-2012 08:17 PM

early upshifting problem
has anyone experienced a problem with the auto trans in an 06 ram 1500 upshifting early? this is my first dodge ive had it for almost four years and it has always done it. i was just wondering if its a normal thing or if i have a valve body issue or something. example would be going up a hill sometimes instead of downshifting like it should it up shifts and i have to almost floor it to down shift. then when i let off it up shifts right back where it was. cant be normal to run up a hill at 1000 rmp lol. just curious.

TransEngineer 12-03-2012 07:49 AM

If you're running at 1000 RPM then you're almost certainly running with the Torque Converter Clutch (TCC) locked. I'm wondering if the "downshifting" you're noticing (at heavy throttle) is actually a TCC unlock (and "upshifting" is the re-lock).

The shift schedule is based on trans output speed, and throttle opening. So it could be your TPS is giving a bad (too low) throttle reading. Best way to diagnose would be to have a dealer tech ride with you (with a scan tool). He can tell what's really happening (what gear[s] you're in, whether the TCC is locked or unlocked, what the TPS reading is showing, etc.) and hopefully figure out why it's behaving as it is. He can also make a recording of the shifting, and upload that to our STAR Center (tech support line) for additional assistance if needed.

gaugedearguy 12-03-2012 07:20 PM

so the tps could cause the problem? because i do have an idle problem. from what i have read here and other places its my iac. my idle goes up and down from about 700 800 to 1500 rmps.

TransEngineer 12-04-2012 08:12 AM

Yes, I would fix any IAC / TPS problems first. Once the throttle realm is back to normal, then see if you still have issues with the trans shift schedule.

gaugedearguy 12-04-2012 07:47 PM

i really appreciate the help. its nice to learn something new from someone very knowledgeable.

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