> Can someone help me diagnose this:
>
> I have a 1997 Plymouth Voyager 3.3L V6 with the 4-speed A/T. It has done > 94K miles.
>
> When cold, it shifs smoothly, no problems at all.
>
> When hot, the shift from first to second is very harsh (usually, but not
> always). Other shifts seem to be OK. I have also noticed a very occasional
> slight bump when coming to a stop (usually only towards the end of a long > journey).
>
> I have changed the fluid and filter and it does not seem to have improved
> it significantly. I had done 2 prior changes putting in Redline Oil's C+
> fluid. This time, I used a regular ATF+3 fluid.
>
> A month or so ago, I disconnected the battery to see if the tranny would
> re-train itself to a better state, but this did not seem to help. >
> So, any ideas?
>
> Also, I have noticed a significant shudder as the A/C clutch engages --
> any idees what might cause this?
You might check to see if there is later firmware for the TCM and have your dealer re-flash it (for $50-120 depending on the dealer. I don't think you will ever get it 100% bump free, but you can improve it.
Bill Putney (to reply by e-mail, replace the last letter of the alphabet in my address with "x")