Whenever I start my car, my car will turn over and then the engine just dies?

If you do not have any leaks from the fuel lines, it is more than likely a fuel pressure issue. Have the fuel pressure checked with a mechanical gauge.

Also pull the vacuum line to the fuel pressure regulator looking for gas in the line, which would indicate a ruptured diaphragm in the FPR.

Based on the symptoms you described for your 1999 Chevrolet Lumina, it's possible that you may have a fuel-related issue. Here are a few potential causes to consider:

Fuel pump: A failing fuel pump can cause the symptoms you mentioned. When starting the car, the fuel pump should provide the necessary fuel pressure for the engine to run smoothly. If the fuel pump is weak or failing, it may not be able to maintain proper fuel pressure, resulting in the engine stalling shortly after starting.

Fuel filter: A clogged or dirty fuel filter can restrict the flow of fuel to the engine, causing issues with fuel delivery. If the fuel filter is obstructed, it can lead to insufficient fuel reaching the engine, resulting in poor performance or stalling.

Fuel pressure regulator: The fuel pressure regulator is responsible for maintaining the correct fuel pressure in the fuel system. If the regulator is malfunctioning or stuck, it can cause an imbalance in fuel pressure, leading to starting and stalling issues.

Fuel injectors: If one or more fuel injectors are clogged or malfunctioning, they may not be delivering the proper amount of fuel to the engine, causing it to stall. Cleaning or replacing the fuel injectors may be necessary.

Here are the fuel line diagrams in case you need them. Check out the images (Below). Please let us know how it goes