Oldsmobile/Buick Repair: 92 oldsmobile cierra, pressure gauge, fuel pressure

Question
i have 92 olds cierra it will run perfect about 20 minutes then just quit. yoyu can crank and crank after it quits but it wont fire then after car sits while itll start again any clues?

Answer
Hello Christina,
Isolate weather it is spark related, or fuel related.
If there is no spark, an intermittent heat related open in the coil or ignition module would be where I would look.

If there is spark, I would test the fuel pressure. I would actually connect a tester, and drive till it quits, watching the pressure gauge to see if the pressure drops cauling the engine to die, or if pressure is still there till after it dies.
You want it there till after it dies, and even while cranking.

But first step is to find out which one....spark or fuel pressure...is missing.

Van