1989 BMW 325i-Engine cutting out at operating temperature

Answer 1

its the idle air control valve. whats happening is that when the engine is cold air being sucked through the intake filter then comes into the idle air control valve, then into the intake manifold and so on, but when the engine warms up the valve should close but its not which is allowing to much air and fuel into the engine flooding it. if that doesnt fix it then its the hall effect sensor. and if your computer (DME) is bad your vehicle would not even fire up and start. good luck