I am about to buy audi v8 1991 year.Car is in excellent condition except one thing-automatic gearbox is impossible to put in any else position than in D and N.It will not go in R or other gears zhen D and N!!When in D it shifts and drives excellent!Second problem is-after some time engine shut down it self!Please,does anyone knows what could be the problem?I dont know anithing about this great cars...