I have a 95 Mercury Sable Wagon with the 3.8L that I bought used with over 200k miles on it. The car starts and then stalls once it reaches operating temperature. After the car stalls it wont start again until it cools down. After it stalls there is no spark. It has all new plugs and plug wires. Also, when it is running and you close the hood the engine sputters and sounds like it is going to die. Can anyone shed some light on what my problem may be? Thanks.