i have a 2000 jetta 2.0 with an auto transmission. the other day it shut off on me when i was going down the highway. i as able to pull over but it would not restart. after waiting 30min i was able to start it back up and get home. the car starts and runs normally until it reaches 190F on the thermostat then shuts off. i already replaced crank sensor battery alternator and coil pack. really need help with ideas before i get it towed to shop.