I have 1990 olds cutlass supreme that has been having idling problems. It won't idle…
We changed the crank position sensor and then changed the plug for it. It started, drove for a few minutes than died and is still doing it. What could it be?
In most cases it would be the ignition control module. If you find however that it will not start after it dies, it is best to determine what the engine is not getting. You will need to determine if it is loosing fuel or spark or both. I have a wonderful diagnostic chart for just that occasion.