Son's 2000 Jetta VR6. Starts great, runs great...has Air induction. After about 30-40 minutes of driving the car just shuts off. All electric is still okay. I try to start it, turns over just fine but no start. I wait 10 minutes and the car starts and runs fine. It may last for a while 20 minuts or it may shut down again in 5 minutes. Again I pull over and wait and it starts no problem. I have tried the 409 relay no help, changed spark plugs, cleaned MAF sensor in alchohol, changed brake light switch...no help still the same problem....PLEASE HELP!!!