I recently purchased a 2002 Audi A4 3.0L V6 Quattro-Automatic with almost 81,000 miles on it. The water pump needs to be fixed, along with brakes, rear left axle seal and the washer pump. The car was driven home which took about 20 minutes and everything seemed fine. The car had sat in my driveway from Thursday September 26- Monday September 30 and I got in it on Monday to bring it to have the brakes replace and the car would turn over but would turn off immediately after it turned over. Why is this?