Question about 1993 Nissan Sentra 4 Door

1 Answer

How do i know if the fuel pump is not working

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 4,044 Answers

If this is electric it's pretty easy. When you turn the key to on, not the start position, you should hear the pump power up to put pressure on the lines. You can test this pressure at the Carburator or Injectors, depending on which you have. It's not just a matter of having pressure, you have to have the correct pressure range. To locate this information and more testing procedures you should get the Haynes repair manual on your vehicle.

Posted on Aug 03, 2010


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer


No ,you don't need to reprogram the computer . You need to learn how to test automotive electrical circuit's ! Do you know what a relay is an how it works ? Supplying B+ at the fuel pump relay to see if the fuel pump electrical circuit is intact back to the fuel pump.Do you know what a wiring diagram is ? True the ECM - engine computer energizes the fuel pump relay to turn on the fuel pump , but wiring has to be good . Free wiring diagrams here Enter vehicle info. Year , make , model an engine size. Under system click on engine , then under subsystem click on fuel controls . Click the search button then the blue link. Looking at the first diagram in the middle of the page you will see the fuel pump relay . Looking down a little bit you see the fuel pump . Look at the connectors an the ground - do you know what ground is or earth ? High resistance can cause problems .
Fuel Pump Electrical Circuits Description and Operation
So learn how to test an not guess .

Apr 21, 2018 | Toyota Cars & Trucks

1 Answer

Honda 2004 civic turns over but wont start. starter fluid gets it going but doesnt stay cranked.. help

Hi Tara,
I would crack the fuel line at the fuel rail and crank the engine, if you have fuel, you know the pump is working. If you have no fuel, check for power at the fuel pump. If there is power at the pump, you will probably need a fuel pump. Let me know if that helps, thanks.


Mar 05, 2013 | 2004 Honda Civic

3 Answers

Replaced the fuel pump and fuel filter. It stopped working. Replaced fuel pump again. It stopped working again. Not drove at all after 2nd. pump replacement. ?????

Do you have 2 fuel tanks? If so it could be the Tank Selector Switch. If not there could be a short sending to much current to fuel pump.

Sep 03, 2010 | 1989 Ford F 150

1 Answer

I don't know where the electric fuel pump or relay are located.Frank

FUEL pump yes in the Fuel tank but which relay no
But find the feed wire going into the tank and test with a test light1 wire should be earth and the other should be alive (with ign key turned to on ready to start) ........if this so then you should be able to hear the pump working ..but it dosent mean its getting fuel to engine turn it off
take off the fuel pipe to the fuel rail and turn on the key again Is fuel coming out (yes good) if no then get under the car and on the chassis some where you will find a fuel filter on the fuel pipe, take it off and replace it as if the pump works and no fuel comes out the filter id no good.............if pump not working and no feed to wires to pump then it might be either a fuse or relay????????????.
Let me know how you get on . Ron

Oct 26, 2009 | 1992 Ford Explorer

1 Answer

Fuel wont flow

You likely have a bad lift pump in the tank. You are working on the fuel pump on the fuel rail right? This vehicle has two fuel pumps one low pressure and one high pressure.

Mar 28, 2009 | 1989 Ford Econoline

1 Answer

Fuel Pump

Exhaust has to come down in order to remove fuel tank to replace the fuel pump.

Feb 17, 2009 | 1997 Mercury Cougar XR7

1 Answer

Anyone know about fuel pumps PLEASE HELP!!

ask a dealership talk to a service tech

Feb 17, 2009 | 1999 Plymouth Grand Voyager

1 Answer

94 Sundance

you know the relay works, you checked it, make sure you have power going to the relay and power at the pump

Aug 21, 2008 | 1994 Plymouth Sundance

1 Answer

95 F150 2wd, interrupted fuel from the front fuel tank

my idea, the pumps are working agianst each other. what is the line pressure supposed to be? I think the rear pump is burning the new pumps up. is the rear pump running when the front pump is running? Let me know

Jul 03, 2008 | 1995 Ford F150 Styleside Regular Cab

Not finding what you are looking for?
1993 Nissan Sentra 4 Door Logo

107 people viewed this question

Ask a Question

Usually answered in minutes!

Top Nissan Experts


Level 3 Expert

81294 Answers

Phil Lovisek
Phil Lovisek

Level 3 Expert

726 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Are you a Nissan Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides