Where to find the fuel pump relay

Tiny
ELDEN
  • MEMBER
  • 1998 NISSAN SENTRA
  • 245,000 MILES
No power going to the fuel pump. Fuse is good. Found a relay box in the engine compartment but does not contain a fuel pump relay.
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Saturday, June 2nd, 2012 AT 7:17 PM

18 Replies

Tiny
KEN
  • ADMIN
Hello,

The fuel pump relay is integrated into the IPDM on some and under the dash on the drivers side in other cars. I found this wiring diagram for you it looks like it could be integrated into the module, here is its location and wiring so you can test it using this guide and check the diagrams below.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

The fuel pump relay is located at connector M22.

Check out the diagrams (Below). Please let us know what happens.

Cheers, Ken
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Saturday, September 3rd, 2016 AT 12:32 PM
Tiny
DAVIDCANTRELL64
  • MEMBER
  • 1998 NISSAN SENTRA
Engine Performance problem
1998 Nissan Sentra 4 cyl Front Wheel Drive Automatic

Where is the fuel pump relay?
Hayne auto book states it is in the relay block but there is nothing labeled fuel pump relay there. I'm I overlooking it or what.
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Tuesday, December 18th, 2018 AT 12:36 PM (Merged)
Tiny
BLUELIGHTNIN6
  • EXPERT
Fuel pump relay is located behind left side of dash.

Thanks for using 2CarPros. Com!
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Tuesday, December 18th, 2018 AT 12:36 PM (Merged)
Tiny
JIMREDMAN
  • MEMBER
  • 1996 NISSAN SENTRA
  • FWD
  • MANUAL
  • 260,000 MILES
How exactly do I replace the fuel pump relay on a 1996 Nissan Sentra? Fuel pump has been replaced with an aftermarket Airtex when the car quit and was not pumping fuel; the fuel pump had been making a high-pitched whine anyway. It ran awhile and quit again. The mechanic changed out the coil and it ran (incidental?) A few miles, quit again. Tried pulling a fuel line at filter, didn't hear pump, no fuel came out when turned on. Back together, I hear the pump spin up when the key is turned on but no response when I try to start other than turning over. Now I have a new relay to put in but the best info I can find says it APPEARS to be what I see inside a supporting structure next to the steering column. Protection gets a 10, accessibility an 0.5. Cannot reach both sides of relay to release. Is there another way, or do I have to disassemble the entire dash area and take loose the steering support to get this relay?
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Tuesday, December 18th, 2018 AT 12:36 PM (Merged)
Tiny
ASEMASTER6371
  • EXPERT
If the pump is running, the relay is good. It may be that the original failed from dirt in the tank starving the pump and burning it out. The same may be happening to your pump. Remove the pump and look inside the tank. If you see debris, then the tank needs to be flushed out completely and fresh gas added as well as a new pump.
REMOVAL

Release fuel pressure.
Remove inspection hole cover located under the rear seat.
Disconnect fuel supply tube, return tube and electrical connectors.
Remove the six screws.
Disconnect fuel tubes and connector, then remove fuel gauge assembly.
Remove fuel pump with chamber.

Pull up the front of the chamber.
Slide chamber forward.
Remove fuel pump from chamber.

INSTALLATION
To install, reverse the removal procedure.

CAUTION:
Tighten bolts to specified torque.

2.0 - 2.5 Nm (0.20 - 0.26 kg-m, 17.4 - 22.6 in-lb)
Always replace O-ring with a new one.
After installation, run engine and check for leaks at connections.

Roy
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Tuesday, December 18th, 2018 AT 12:36 PM (Merged)
Tiny
JIMREDMAN
  • MEMBER
Thanks for the direction on this. I was thinking the relay might be kicking back off under load. But I will check out the pump closer now. It is new only a few miles ago, but I'm looking around on the Net and seeing mechanics claim a high failure rate for this brand.
When the pump was replaced, the tank was very clean.
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Tuesday, December 18th, 2018 AT 12:36 PM (Merged)
Tiny
3MCWATTS
  • MEMBER
  • 1997 NISSAN SENTRA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 130,000 MILES
Fuel relay valve 1997 nissian, we have replaced fuel pump and will not stay running, thought was fuesl/air sensor but not the problem, could it be fueal relay valve?
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Tuesday, December 18th, 2018 AT 12:36 PM (Merged)
Tiny
WRENCHTECH
  • EXPERT
I've never heard of a "fuel relay valve". What is your fuel pressure?
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Tuesday, December 18th, 2018 AT 12:36 PM (Merged)
Tiny
SWOOZYQ13
  • MEMBER
  • 1997 NISSAN SENTRANISSAN SENTRA
Hi,
I have a 1993 Nissan Sentra with approx. 160.000 Miles on it. It's an automatic. I just purchased this car and it seemed to work fine for the first two weeks. Then one night when I was driving it to work I noticed suddenly that I had no directionals. The next morning when I went to leave work, the directionals worked fine again. That day when my boyfriend was driving it home from his work, the power just suddenly cut off to everything and several of the dashboard lights were clicking on and off repeatedly. We had the car towed home where he tried jiggling some wires to see if that was the issue. The car would try to start if the steering wheel was turned to the left, but would never fully start. We left it alone and then just for the heck of it I went out the next morning and tried to start it and it started right up. We drove it for a week with no problems until one night we went out to eat and on the way home the same issue happened. Power cut off and nothing, just blinking lights and no starting. This time we conveniently broke down in front of an auto repair shop so we asked the mechanic to look at it the next day. When I called him to see if he had found anything he said that the car had been working fine all day but if he had to deduce an issue he would say that it may be the Fuel pump Relay, so we bought a new one. The next night when My boyfriend tried to start the car to come and pick me up nothing, it just automatically cut off all power and all the lights continued blinking again. He replaced the Fuel filter relay but it still wouldn't start, it's been Two days this time and it still hasn't started and the lights keep blinking whenever we open the door. Also there is a box in the trunk that is making ticiking noises when this happens, we don't know what that is as we haven't been brave enough to take it off and see whats under it. There are many wires going into it though. Please Help!
Thank you very much from a stumped nissan owner :o)
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Tuesday, December 18th, 2018 AT 12:36 PM (Merged)
Tiny
FISHERMAN
  • MEMBER
Hello !
Start checking if the car has an after-market alarm system that could be "active"
I think that the "blinking" lights are the alert system and it has a "kill switch" that "cuts" the power.

Let us Know!
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Tuesday, December 18th, 2018 AT 12:36 PM (Merged)
Tiny
SWOOZYQ13
  • MEMBER
Where would I find an alarm system? And how would I shut it off. Usually it takes about 12 hours before Zippy will let us drive her again after this happens. This time however it's been since 12 AM Sunday morning.
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Tuesday, December 18th, 2018 AT 12:36 PM (Merged)
Tiny
FISHERMAN
  • MEMBER
Well,
probably the alarm get "active" by a loose wire.
The alarm module use to be under the dashboard. Look for it
also check if there is a siren on the engine compartment and led on the dashboard.

I m looking for a posibilities.

Let us Know!
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Tuesday, December 18th, 2018 AT 12:36 PM (Merged)
Tiny
SWOOZYQ13
  • MEMBER
So now after two days of not running we discovered that if we turned on the headlights she would start, but as soon as we turned them off she dies. And the blinking lights on the dash continue. It's very strange and kind of spooky
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Tuesday, December 18th, 2018 AT 12:36 PM (Merged)
Tiny
RACHELSUSANNA
  • MEMBER
  • 1992 NISSAN SENTRA
Electrical problem
1992 Nissan Sentra 4 cyl Front Wheel Drive Automatic

Having Issues With My Nissan For Like 4 Days Now, It Wasnt Starting When I Tried To Run An Errand One Night, So I Tore The Car Apart With A Couple Friends, And Came To The Conclusion That The Problem Lies In My Fuel Pump Relay

--Bought A New One From Napa, Not Sure Why But It Just Wasnt Right When I Plugged It In, So My Brother In Law Pulled A Radio-shack Toggle Switch (hed used for his stereo) Out Of His Truck And Rigged It Up To Fit my relay Relay And Solve The Problem!

--The Car Ran The Rest Of The Night, And Briefly This Morning, However, It Was Not Long Before The Car Just Suddenly Would Not Turn On. AGAIN So Now I Really Dont Know, I Thought The Relay Was Fixed with the toggle switch Could a fuse Be Blown? If so, What Do I Do? Also, im noticing that when I turn my key just to ON position, I don't hear the fuel pump kick on (like its soft buzzing noise) at all. Idk how that figures in but I need help

Ive Been Stranded In The Same Parking Lot For A Day
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Tuesday, December 18th, 2018 AT 12:36 PM (Merged)
Tiny
BLUELIGHTNIN6
  • EXPERT
What do you mean it just wasn't right when you plugged it in? It definitely sounds like the relay is at fault, the temp. Toggle switch probably did not have high enough voltage rating for the fuel pump circuit so most likely the toggle switch failed. You need to replace the relay
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Tuesday, December 18th, 2018 AT 12:36 PM (Merged)
Tiny
CSENGLE
  • MEMBER
  • 1992 NISSAN SENTRANISSAN SENTRA
I have a '93 Nissan Sentra w/1.6 L engine. The car had been sitting for 1yr without being drivin. Recently I started driving it again and it overheated which cranked the head. Since the car had 231,000 miles on it, I opted to put in a new, used engine. The car would start with aid of starting fluid. It was determined it needed new fuel pump. Fuel pump was replaced and it ran for couple of hours and then the relay start making a loud noise and the fuel pump died. I was told the gas was probably bad and was wrecking the pumps.I drained the tank, replaced the relay and put in another new pump. Nothing. The fuse in the dash is good. Is there an inline fusible link somewhere?
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Tuesday, December 18th, 2018 AT 12:36 PM (Merged)
Tiny
RASMATAZ
  • MEMBER
When key is in On position, do you hear the pump for 2 secs?

No buzz/humm-disconnect the wire connector at pump check black/red for power-No power -check Brn wire and black/red at relay-is there 12volts on both when key is in On position.

2pumps-did you change the fuel filter on the firewall.
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Tuesday, December 18th, 2018 AT 12:36 PM (Merged)
Tiny
CSENGLE
  • MEMBER
Yes I changed the relay and the fuel filter. I did not hear the fuel pump turn on. Although there was power to the source. My brand new $200 fuel pump was bad. My $22 pump from the junk yard fired the car right up! Thanks for keeping me focused on the basics.
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Tuesday, December 18th, 2018 AT 12:36 PM (Merged)

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