Originally Posted by velcro
It was years before i changed the filter and fluid. and it is a eltronic transmission
First, take it to a shop and have the sensors tested. If one is bad, replace it. If none are bad or the replaced sensor doesn't fix the problem, here's my theory:
If it was years before you changed the fluid, then you basically signed a transmission death wish by doing so.
You see, the bands in an automatic transmission are made of a paper-like material. By changing the fluid regularly, you keep the bands in decent shape. However, if you don't change it for a long time, the miniscule particles (can't even be seen unless in large amounts- looks like grey sludge in the bottom of the pan) start to flow straight through the filter, as the filter element goes bad after a while. The particles get back on the band and cause extra friction, which eventually leads to breakdown.
On the other hand, those particles, in large quantities, like when the fluid isn't changed in a long time (60-70,000 miles), actually provide lubrication, as odd as it sounds. By changing the fluid, you are removing those particles and the filter will catch anything left in the system, so the bands don't have the lubrication they did, which causes them to literally fall apart.
Change your fluid and filter again and this time, inspect the pan. If you see particles bigger than the tip of a ballpoint pen, you're in trouble.
I'm in the middle of installing a new AOD in my wagon (literally- just taking a break) for the same reason. I guarantee I'm going to be much more delicate with my transmission maintenance!!