The Saga continues. This weeks episode.

Well turns out tranny fluid was contaminated. 5 gallons wall mart fluid flushing later I got good clear fluid, BUT now a new issue.

Now the tranny is not shifting correctly when you get under load about 40+ MPH. It does great getting you to 40+ just does not downshift quickly enough and makes the engine shutter when you start up a hill around 40MPH in highest gear. If you just back off the trottle it will downshift at around 30MPH then you can pull back up to speed no issue. Just sucks having to wait to get up the hill, and makes everyone behind me wait also.

Any suggestions? Got to be a sensor or something that detects when motor gets under too much stress to go ahead and shift to lower gear