hey guys i have a 1999 audi a4 2.8l auto tranny the car ran fine yesterday but this morning i went to go start it and it shutoff then i restarted it and it would rev up a little the drop down in rpms and rev and drop so i cleaned the maf sensor with maf sensor cleaner put a new air filter and now when i come to a stop it almost dies any ideas to what could be happening i would appriciate anybodys help car has 108k just redid the timing belt waterpump and tensioners thankyou