Road Trip With the S/C

[BaM*BaM]

Hey Tone , we'll give 'er a try when it stops snowing on our local pass. I have very little doubt about the tranny actually shifting higher tho.
Dragon Bob has had the same experience soon after getting his S/C. This is a quote by him from the above dyno test thread.
Dragon Bob wrote:

""Tone: First I have never been able to keep my VX from shifting from 3rd to 4th while selecting 3rd gear. The power switch keeps in third a little longer but it shifts to 4th no matter what. My 99 trooper also acts this way.
... Lastly, when the Dyno was connected the front shaft was disconnected and thus all the BHP was delivered to the rear wheels. Was the TOD or front shaft disconnected on your Dyno runs?""

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I think it possibly has something to do with the difference between a steep incline road and flat roads. On the steep, uphill incline, the HP's are concentrated almost all on the VX's rear end,... similar to the Dyno test effect of disconnecting the front shaft., " thus all of the BHP was delivered to the rear wheels, " where the 'lock' on '3rd' couldn't be maintained."

'VX crazy' states similar results in her reply above,... that the same thing happens to her daily as she ascends "a very steep incline."

Possibly, when a lot more HP's are concentrated on the rear and not partially distributed to the front via TOD,... the more likely it is for the torque converter to force a shift to the next higher gear??

I also think that this is still a very rare event. It is just too unlikely for all of the required variables of relative speed/ rpm's, road incline angle, hp, torque, and TOD functions to match up enough times for this to become a 'normal' event. Living in the mountains and having an S/C , (as Dragon Bob and I do) should add considerably to its chances to occur.