Vw golf turns over but wont start but willl with starter fluid and when it starts runs for a second but stops

Check fuel pump relay by replacing it with another one from the Power distribution assembly. Make sure that you use one with the same number on it. This sounds so petty, but is there gas in the car? You'd be amazed how easy that some of these are to fix. Next in line is the fuel pump itself. Standing outside the car with an assistant in the driver seat, have them just turn the key to the run position. Did you hear a small motor run for just a second. Good. That's the pump pressurizing the lines and injectors. Don't hear it? You did check that fuel pump fuse already, right? Then, there's the possibility that the pump has failed.