I am an owner of a 2000 catera sport. I have had the fuel pump and relay changed, new coils, injectors cleaned. The problem is that after driving the car for 10-20 minutes it just shuts down. It will not start for 20 minutes or so, then it will run for a bit, then shut down again. The codes are just saying that it is ruing lean, MAF, and I know that won't shut her down. Please help, this is all I have to drive, and I don't have funds to take it to a cadi dealer. thanks for your time.