Datsun 280zx problem

Asked by GuruXMKVV Nov 21, 2018 at 03:41 PM about the Nissan 280ZX

Question type: Maintenance & Repair

I have a 1980 280zx that is running rough. However periodically it runs fine and during that time I hear a high pitched hum that seem to be comming from rear compartment area. The vehicle runs rough again when the hum stops. Fuel pump problem?

7 Answers

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

70

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.

60

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

1 people found this helpful.
60

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

1 people found this helpful.
60

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

60

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

Your Answer:

280ZX

Looking for a Used 280ZX in your area?

CarGurus has thousands of nationwide listings and the tools to find you a great deal.

Postal Code:

CarGurus Experts

  • #1
    aeleven
    Reputation
    70
  • #1
    dandyoun
    Reputation
    70
  • #1
    enginecreator
    Reputation
    70
View All

Find great deals from top-rated dealers

Search

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.