[richtazz]

Was it getting fuel and spark when cranking when it wouldn't start, or didn't the shop get it to repeat the problem? It sounds like a bad ignition module or ECM. Both will work when cold, and fail after the car has run a while. You can access the ECM under the plastic cover in the passenger side fender just ahead of the wheel well. Try starting the car, and lightly tap on the top edge with the handle of a screwdriver. If the car stutters or stalls, then the ECM is bad. If the service # on the ECM is 1227727, it is a high failure part due to water intrusion issues and could very well be your problem. The ignition module is under the coils (a pain to get at as it's mounted to the front of the engine under the front exhaust manifold), and can be tested at Auto-Zone/Advance for free. Make sure they run the test enough times to get the module warm.