Vehicle Shudder problems of the 2008 Ford Edge

While driving down the freeway at approx 75 mph for 1 hour, vehicle suddlenly stopped accelerating, odo went blank, speedo zero, airbag and powertrain lights came on. I cut across 6 lanes of very heavy traffic to exit and struggled to get up the incline. Parked at the nearest lot and shut off the engine. Restarted with a loud clunk and dash was ok except powertrain light was still on. Put in reverse and felt a violent clunk. Drove to a nearby Ford dealership where they diagnosed bad turbine shaft speed and output shaft speed sensors. They performed the repairs at my cost of $856. 91. I picked up the car and drove it 80 miles back home 2 days later with no problems. Today, 6 days later, I am experiencing extremely rough shifting, especially at around 40 and 60 mph and very bad hesitation where the entire vehicle vibrates and does not seem to know what gear to be in. Not only is this vehicle dangerous and defective, the expensive repairs are not correcting the problem and have made it worse.

This problem has occurred since first few months of owning it. At times while driving at all speeds the car's power goes away in the sense you might be driving 68 then the car starts to slow down, then slam, there is a loud mechanical slam, and the car feels like you ran it to something metal or solid. It literally shakes the whole car scares the !@#$ out of you. It?s usually on the express way and more when it?s cold. It seems when I?m barely increasing the gas, then letting off a bit, then back on the gas again. The local Ford dealer found a bulletin from Ford stating that replacing the transmission doesn't fix this problem to wait for further investigation. We have been waiting since 2008. The car runs great other then this problem. This might not happen for weeks then it will happen as many of 3 times in a 5 mile drive. I went on a 2 hour trip this week. It happened twice on the way up and once on the way back. As soon as we take it to the dealer it doesn't happen. I've asked them to keep the car for a week and drive it. That hasn't happened. They keep throwing their hands in the air. I wish it would just lock up so they can find something. I have seen others with the same problems but yet Ford hasn't fixed it.