When you first start the car it will run untill you shift it into reverse or drive then it stalls. This happens more often when the car is on a incline and parked at a incline. Ounce the car levels out it's ok, if you can keep the rpms up untill you get going. Could this be a clogged valve or recall I don't know about? 2001 Lexus ES300 has about 150,000 miles on it.