Datsun 280zx problem

Could be that you need to clean the filter, or the contacts for the pump

Sounds like the fuel pump is on the way out.

Clean your positive and negative contacts on your fuel pump. In the hatch area, look under the carpet and foam. You'll see a green and black wire going to a connector. Make sure that connector is not corroded and check the voltage on it. You should get 12 volts. Fuel pumps make noise and sometimes shut off when they are going bad or not receiving the correct voltage due to corrosion.

Yeah he's right mom was doing the same thing with the high pitch noise and running good sometimes and bad sometimes put a new pump I want any noise went away now I need help my fuel injectors are flooding the number 5 and number 6 cylinders so I moved some fuel injectors around when you're still flooding number 5 and number 6 it's done this twice before once it fixed itself and other time I disconnected the battery and switch relays and it stopped for a while and now it's flooding it won't run it all is there a sensor on the crank or distributor that sends the signal to injectors I thought they were just merely stuck open but it seems to be electrical

Any ideas why mine is flooding the number 5 and number 6 cylinders and now number for old fuel injectors around and relay after actually pulley relay out for the fuel pump to get it to stop running I thought it might be the regulator

My 83 280 was doing the same thing with the same noise I replace the pump and relay and have been chasing something throughout the electrical system losing gauges open Dome fuel injector staying running flooding the cylinders weak spark from the coil coil wire replaced the coil wire distributor cap ignition module spark plugs

Tracing electrical problems throughout the car thinking it was a ground everything from interior lights not working gauges Brown headlight