1986 Olds Calais (60,000 miles) - After driving the car non-stop for about 20 minutes, at the first stop, the car starts to shimmy a little and the engine dies; it will start right up again, but when put in drive, it dies again; and won't start up again until the engine has cooled for about an hour.
It's been in and out of the shop since Feb. 20, 2006, and is doing the same thing as when I took it there initially. It has a new ignition wire set, new spark plug wire set, fuel system tune up, new EGR valve gasket, EGR solenoid, EGR valve, ignition coils, poly rib belt, alternator drive belt, radiator flush, thermostat, water outlet gasket, electrical system test, RTV Silicone and lastly a new electric fuel pump where they drained and refilled the fuel tank. What can be wrong??

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1986 Oldsmobile Calais V6-181 3.0L

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