HELP! My automatic transmission is spinning

Dear Escort drivers, I have a problem: I have been driving a Ford Escort tournament since 04/2006 Ghia Automatik EZ: 09/1996 and am generally very satisfied! My problem is becoming increasingly the “famous” automatic transmission!!! Supposedly it should have been developed by FIAT!?!? I bought the car with 152,000 KM and had to put up with up to the slight jerking in the gear (D) so far no problems. After about 40,000 KM (total approx. 190,000 KM) I have the problem that when parking (P) inserts The speed increased and I had to switch off the car immediately. When restarting the car, the speed increased for a few seconds to approx. 1300 revolutions and commuted again to normal approx. 850 revolutions. When stopping, e.g. at a junction, the automatic, as if the car wanted to continue driving. In a FORD workshop, my on-board computer was read out and found out that the Lambda probe was only working temporarily and the engine ventilation valve should be defective. for reading out: approx. 15 minutes almost 44 euros!) I then bought in the accessories for approx. 107,00 euros (Ford 207,00 euros) a new Lambda probe (NGK) and the new engine ventilation valve at Ford. Since the said conversion I have a z u s e t z i c h e s problem: the jerking, e.g. at traffic lights or at stop has not changed. I then switch to N and wait until the traffic light turns yellow, insert D and then drive with engine dropouts, as if it runs only on three cylinders, slowly white After about 20-30 meters the engine runs round again. At the advice of a master, I then stuck the negative pole on the battery for half an hour and after that – so that the computer regenerates – drove a longer distance. Unfortunately no improvement occurred! So-called experts have told me repeatedly that this “problem transmission” is known and also a certain time was offered in the Fiesta. The main problems would be the brake belts in the transmission and the impulse encoder. ebe should have already been overtaken at approx. 145,000 KM before my purchase – according to documents -. What should I do? As a father of three children I have to turn every cent and can not afford expensive workshops. Can you give me a good advice and advice? I am otherwise very satisfied and would like to keep my escort – also as an automatic -! What would the “overtaking” of the gearbox cost or can you buy a good used one somewhere? Who can help me? Thank you in advance!!!