Can be a bad pump? I need to replace it again?

Tiny
ZACKMAN
  • MECHANIC
  • 4,202 POSTS
I am not sure what you mean by fuel module control. Where did you get it and what is the part number. A picture helps, too.
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Saturday, August 8th, 2020 AT 12:46 PM (Merged)
Tiny
DRNUKE
  • MEMBER
  • 3 POSTS
  • 1996 NISSAN SENTRA
  • 4 CYL
  • 2WD
  • AUTOMATIC
I have gotten down to the fuel pump in a 1996 Nissan Sentra, but cannot find the clip that releases the assembly. I have taken out the float and can access the pump, but cannot seem to release it to remove it. Any suggestions? A picture would be great.

Thanks.
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Saturday, August 8th, 2020 AT 12:46 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
REMOVAL
1. Release fuel pressure.

2. Remove inspection hole cover located under the rear seat.

3. Disconnect fuel supply tube, return tube and electrical connectors.
4. Remove the six screws.
5. Disconnect fuel tubes and connector, then remove fuel gauge assembly.

6. Remove fuel pump with chamber.
*Pull up the front of the chamber.
*Slide chamber forward.

7. 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.
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Saturday, August 8th, 2020 AT 12:46 PM (Merged)
Tiny
DRNUKE
  • MEMBER
  • 3 POSTS
Thanks rasmataz. I've tried this but with no luck. The chamber is held in place by something. I'm afraid to use too much force for fear of snapping something off. The attached photo is what I am looking at - "front" is on the left.
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Saturday, August 8th, 2020 AT 12:46 PM (Merged)
Tiny
DRNUKE
  • MEMBER
  • 3 POSTS
I was able to get it out there is a clip at the top, on the rear end of the chamber.

Thanks again.
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Saturday, August 8th, 2020 AT 12:46 PM (Merged)
Tiny
TESHY
  • MEMBER
  • 1 POST
  • 1995 NISSAN SENTRA
Engine Mechanical problem
1995 Nissan Sentra Four Wheel Drive Automatic

i was driving my car one day and it was running fine until I went to a service station. When I pulled out of the yard the car started to rear up like I was pressing gas reallly hard but I wasnt, and it did this all the way home even when I pressed brakes. I left it for a day or two then decided to try again it was fine for about three days then it turned off when my gas level got to low I am just wondering before my husband changes the fuel pump is that the problem?
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Saturday, August 8th, 2020 AT 12:46 PM (Merged)
Tiny
ZACKMAN
  • MECHANIC
  • 4,202 POSTS
Have your husband clean the entire throttle body, including the butterfly and throttle cable. Sticky carbon buildup within the TB probably caused the throttle cable stayed engaged even when you remove your foot from the accelerator pedal.
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Saturday, August 8th, 2020 AT 12:46 PM (Merged)
Tiny
KMOON
  • MEMBER
  • 2 POSTS
  • 1994 NISSAN SENTRA
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 100,000 MILES
How do u remove and replace a fuel pump in a 94 nissan sentra
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Saturday, August 8th, 2020 AT 12:46 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
You access it thru the backseat its a simple job when you get there
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Saturday, August 8th, 2020 AT 12:46 PM (Merged)
Tiny
KMOON
  • MEMBER
  • 2 POSTS
I did that, I have everything taken lose but I can not figure out how to get it out of the bracket inside the tank
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Saturday, August 8th, 2020 AT 12:46 PM (Merged)
Tiny
MATA
  • MEMBER
  • 4 POSTS
  • 1994 NISSAN SENTRA
Engine Performance problem
1994 Nissan Sentra 4 cyl Two Wheel Drive Automatic 210K miles

My car began cutting off every now and then starting a few months ago. It wasn't frequent and only happened when I first started the car, drove down the street and stopped. It kept cutting off more frequent so we replaced the fuel injectors, and cleaned the throttle. Check everything else, car seemed to run okay for a while. Then the car would have trouble starting, and just wouldnt fire. Finally it would not fire anymore and I had it towed to a shop. They said it cranked up fine and the fuel pump was working. A few days later the car wouldn't fire anymore unless I banged the fuel tank a few times, then I would hear the pump kick in. Also, if I sprayed starter fluid to the intake filter she would fire, so this let me know it had to be the fuel pump. This process worked for about two weeks until she gave out. I wanted to make sure there was nothing else I could do before I replace it?
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Saturday, August 8th, 2020 AT 12:46 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the fuel pressure before you condemn the fuel pump/and remove the back seat and double check the fuel pump connector-

Or disconnect the fuel filter turn key to On and observe for fuel -No fuel the pump is defective-
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Saturday, August 8th, 2020 AT 12:46 PM (Merged)
Tiny
MOTHUPI
  • MEMBER
  • 1 POST
  • 1994 NISSAN SENTRA
  • 2.1L
  • V6
  • FWD
  • MANUAL
  • 148,000 MILES
Car standing a year for penalbeating try to start but carbarator cant get fuel changed petrol pump still it doesnt changed petrol fitter still nothing what can be the problem?
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Saturday, August 8th, 2020 AT 12:46 PM (Merged)
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
Your car doesn't have a carburetor. It should be fuel injected.

All "crank, no start" conditions are approached in the same way. Every engine requires certain functions to be able to run. Some of these functions rely on specific components to work and some components are part of more than one function so it is important to see the whole picture to be able to conclude anything about what may have failed. Also, these functions can ONLY be tested during the failure. Any other time and they will simply test good because the problem isn't present at the moment.
If you approach this in any other way, you are merely guessing and that only serves to replace unnecessary parts and wastes money.

Every engine requires spark, fuel and compression to run. That's what we have to look for.

These are the basics that need to be tested and will give us the info required to isolate a cause.

1) Test for spark at the plug end of the wire using a spark tester. If none found, check for power supply on the + terminal of the coil with the key on.

2) Test for injector pulse using a small bulb called a noid light. If none found, check for power supply at one side of the injector with the key on.

3) Use a fuel pressure gauge to test for correct fuel pressure, also noticing if the pressure holds when key is shut off.

4) If all of these things check good, then you would need to do a complete compression test.

Once you have determined which of these functions has dropped out,
you will know which system is having the problem.
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Saturday, August 8th, 2020 AT 12:46 PM (Merged)
Tiny
KMCFRIZZ
  • MEMBER
  • 2 POSTS
  • 1990 NISSAN SENTRA
  • 4 CYL
  • 2WD
  • MANUAL
  • 68,000 MILES
I have a nissan sentra, 1990, manual transmission, 1.6L

the car has always ran really well. Couple of days ago put a new stereo in, it died. Replaced battery, ran for a day and half, died, replaced alternator, ran a day died. It will start and run about a min then dies, won't start again unless I wait about an hour then does the same thing. I'm moving on to the fuel system. Is there directions on diagrams on how to change the fuel pump and fuel filter. I had both barrery and alternator check, they are fine, should be since they are new. Anyway any diagrams or directions would be of great help
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Saturday, August 8th, 2020 AT 12:47 PM (Merged)
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Fuel filter wouldn't cause engine to stall. Inspect your fuel pump relay before replacing your pump itself.
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Saturday, August 8th, 2020 AT 12:47 PM (Merged)
Tiny
KMCFRIZZ
  • MEMBER
  • 2 POSTS
Thanks for the prompt reply. It is wonderful to hear an honest answer but you kind of lost me. What the heck is a pump relay?
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Saturday, August 8th, 2020 AT 12:47 PM (Merged)
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
A relay is similar to a switch, only the vehicle's computer turns it ON or OFF instead of a human. When the relay is activated, it allows the component that it controls to operate. If for some reason the relay fails, it can no longer allow the component to operate either. Your vehicle's fuel pump relay is located under the left side of the dash and should be green in color. It will be a large plastic square shaped item plugged in, it just pulls out much like a fuse does. You can go to our "first things to check" page to learn how to test an electrical relay
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Saturday, August 8th, 2020 AT 12:47 PM (Merged)
Tiny
DAVID CORDOVA
  • MEMBER
  • 1 POST
  • 1990 NISSAN SENTRA
Engine Mechanical problem
1990 Nissan Sentra 4 cyl Front Wheel Drive Manual

one of the fuel lines was leating fuel while car was running pulled both lines and replaced both about a few hours later now fuel pump is not pulling fuel to engine. I can add fuel into the intake and it will run till fuel burns off how or what would be needed to check out problem?
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Saturday, August 8th, 2020 AT 12:47 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Recheck the lines-do you hear the fuel pump come On when key at run position? If so check fuel pressure with a gauge not the eyeball or thumb method.
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Saturday, August 8th, 2020 AT 12:47 PM (Merged)

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