Question about 1993 Oldsmobile Cutlass Ciera

1 Answer

I replaced the fuel pump and sending unit, trying to get the unit back into the tank, is there a certain way, I can't seem to get it to seat straight up and down

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  • davefield459 Sep 05, 2009

    We got the pump installed,everything back together.
    but the car is still acting like it's not getting fuel any suggestions?

  • davefield459 Sep 08, 2009

    Multiport, we bled the air out of the fuel system, also changed the spark plugs, it runs better but we still have to pump the gas peddle to start the car and we can't start out fast we have to start out slowly and once it's past a certain RPM it runs good. also we hooked a dianostic machine to the ECM cleared all the faults nd we can't get any faults t all.

  • davefield459 Sep 12, 2009

    Are you talking about the timimg belt? We also replaced the fuel injectors it runs but still surges when we take off, but then it runs great, also it sometimes is hard to srtart

  • davefield459 Sep 12, 2009

    Are you talking about the timimg belt? We also replaced the fuel injectors it runs but still surges when we take off, but then it runs great, also it sometimes is hard to srtart

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  • Oldsmobile Master
  • 1,564 Answers

You've got to be very careful when placing the fuel tank unit back into the tank. If it is indexed(a small tab or pin) make sure your unit is lined up with it. Also as you're going in take great caution not to bend or deform the float arm in any fashion. Many times using the new ring gasket can cause a big headache. If your existing gasket is in good condition put a little vaseline around the perimeter of it and some on the locking ring if it has one. Otherwise just gently keep fisshing around until the unit clears the iner splash guard and make absolute certain the you have the unit in precisely the same (clock) position as when it was removed. It has to sit easily into the circle easily before you place the ring or screws back in. Good luck.Dana

Posted on Sep 04, 2009

  • 1 more comment 
  • Dana Newcombe
    Dana Newcombe Sep 05, 2009

    Not to sound presumptious but, has the fuel filter been changed, and, in the correct direction of flow?

    Please remind me of your fuel injection type. Throttle body or multiport or Constant fuel with a fuel distributor,the last being the least likley.

  • Dana Newcombe
    Dana Newcombe Sep 08, 2009

    The more you tell me the more it sounds as though your running on a retarded spark(timing) has anyone checked for play in the belt?

  • Dana Newcombe
    Dana Newcombe Sep 12, 2009

    Pop off your distributor cap, and with a breaker bar and the correct size socket for the center bolt on the crankshaft, move the crankshaft about four inches in each direction.Your distributor rotor should move immediately in both directions. If it does not than you'll need to replace your timing chain.Thamks again, Dana

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1 Answer

Where is the fuel pump located, for a 1991 Nissan Stanza


Fuel pump is located inside the fuel tank. Look in trunk under rug or Remove the back seat and under it you should find an access cover to get to the fuel tank sending unit. (the cover will be SCREWED in place). Remove cover, remove the sending unit and the fuel pump is installed on the sending unit

May 02, 2015 | 1991 Nissan Stanza

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Replace fuel pump 1993 mazda 323



REMOVAL & INSTALLATION

323, Protege, 520-22 626 and MX-6 and 522-24 MX-3 Models
See Figures 1 and 2

  1. Relieve the fuel pressure and disconnect the negative battery cable.
  2. If not already removed, depress the clips on each end of the rear seat cushion and remove the cushion.



0900c152802612b0.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 1: Detach the fuel hoses and electrical connections from the fuel pump, then remove the attaching screws and the pump


0900c152802612b1.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 2: Exploded view of the fuel pump assembly for the 323, Protege, 520-22 626, MX-6 and 522-24 MX-3

  1. If not already done, detach the electrical connector from the fuel pump/sending unit.
  2. Remove the attaching screws from the fuel pump/sending unit access cover and remove the cover.
  3. Disconnect the fuel supply and return hoses from the fuel pump/sending unit.
  4. Remove the attaching screws and the fuel pump/sending unit from the fuel tank.
  5. Detach the sending unit electrical connector, remove the sending unit attaching nuts and remove the sending unit from the fuel pump assembly.

To install:
  1. Attach the sending unit to the fuel pump assembly and install the nuts. attach the sending unit electrical connector.
  2. Install the fuel pump/sending unit into the fuel tank with a new gasket and install the mounting screws.
  3. Connect the fuel supply and return lines.
  4. Install the access cover and the mounting screws.
  5. Attach the sending unit electrical connector.
  6. Position the rear seat cushion over the floor, making sure to align the retaining pins with the clips. Push down firmly until the two retaining pins are locked into the rear seat retaining clips.
  7. Connect the negative battery cable, start the engine and check for proper system operation and for fuel leaks.

May 08, 2012 | 1993 Mazda 323

2 Answers

I have a 1999 Buick century and my fuel gauge keeps reading full but when I sit still for so long it goes to empty but when I turn off the car and turn it back on it goes back to full. What could that...


I hate to differ but the tank does not need to be dropped. There is an oval access panel inside the trunk, under the carpet and pad past the spare tire closer to the back seat. Pull back the carpet and remove the screws holding the access panel. The sending unit module is under that panel with two electrical plugs that need to be disconnected. Remove the screws that hold the module and CAREFULLY lift out the module. There is a fine, wire filament that is likely not making connection to the resistor board on the bottom of the module. If tweaking the connection doesn't cure the problem, then you will need to replace the module (which includes the pump assy.). Unfourtunately, this is a fairly expensive part.

Sep 29, 2011 | 1999 Buick Century

1 Answer

How to install fuel filter&pump


  • De-pressurize the Camry's fuel system. With the gas cap open (to release pressure in that location), open the fuse/relay panel under the hood and remove the relay labeled "C/OPN." Start the engine and let it run until it stops. Disconnect the battery's negative cable.

  • Detach the rear seat from the car. Lift up the front edge of the seat bottom cushion, disconnect the mounting bolt underneath and remove the cushion. Pull up the seat back locks, flip the seat backs down and remove the mounting bolts.

  • Remove the service hole cover from the floor under the seat concealing the fuel pump/sending unit.

  • Disconnect the fuel line and electrical connectors from the fuel pump unit. Remove the retaining bolts and withdraw the unit carefully out of the fuel tank.

  • Release the clips on the fuel pump assembly's plastic support with a screwdriver to remove the support. Then pull off the rubber isolator, remove the fuel sock filter and disconnect the electrical connector from the top of the assembly. You can now withdraw the fuel pump from the housing.

  • Connect the new fuel pump into place on the assembly housing. Reassemble the fuel pump/sending unit in order, from the electrical connector to the fuel sock filter, rubber isolator and bottom plastic support.

  • Place the pump unit back within the fuel tank and reattach the bolts. Reconnect the electrical connectors and the fuel line. Reattach the rear seats.

  • Replace the "C/OPN" relay, reconnect the negative battery cable and fill the fuel tank if it is empty.

  • Pressurize the Camry's fuel system by turning the ignition on for a couple of seconds. Then turn it off for ten and repeat this five to ten times.

  • Jan 02, 2011 | 1996 Toyota Camry

    1 Answer

    I'm trying to find where the fuel level sending unit/fuel pump are located in my car. I pulled out the back seat and I can't find the port for it?? 2.7 V6 2001.


    The sending unit is part of the fuel pump assembly in the tank.
    To do anything with it you must drop the tank out of the car.

    Sep 26, 2010 | 2001 Chrysler Sebring

    1 Answer

    How to change a fuel pump on a 2005 Nissan


    Nissan Car Altima & Sentra 1999-06 Repair Guide
    Fuel Pump - Removal & Installation
    1. Before servicing the vehicle, refer to the Precautions Section.
    2. Relieve the pressure from the fuel system.
    3. Remove or disconnect the following:
      NOTE When the fuel sending unit needs to be removed, pull the tab upwards. The tab is located on the sending unit, opposite the end of the float. After the tab is pulled, the sending unit will lift straight out of the tank bracket.
      Negative battery cable Rear seat and the access cover Fuel pump electrical connector Fuel lines from the fuel pump assembly Locking ring Fuel gauge assembly Fuel tube and connector from the fuel gauge
      Fuel pump by pinching the 2 locking tabs together. Lift the fuel pump assembly straight upward and out of fuel tank. O-ring and discard
    4. Place a clean rag in the hole to keep out dirt.
    To install:
    1. Remove the rag
    2. Install or connect the following:
      NOTE Verify that the mark on the fuel tank and the components are aligned when installing the pump and fuel gauge sending unit.
      New O-ring and fuel pump Electrical connection and fuel tube to the fuel gauge sending unit Fuel sending unit into the tank
    3. If equipped with a threaded lock ring torque the ring to 22-26 ft. lbs. (30-35 Nm). If equipped with a lock ring held by six retaining screws, torque the screws to 18-22 inch lbs. (2-2.5 Nm).
      Fuel lines and fuel pump electrical connector. Always install new clamps on the fuel lines. Negative battery cable
    4. Start the engine, check for leaks and repair if necessary.
      Fuel pump access cover Rear seat

    The fuel pump is located in the fuel tank on all vehicles. In-tank fuel pumps are accessible by lifting up the rear seat to gain access to the inspection cover.
    1. Before servicing the vehicle, refer to the Precautions Section.
    2. Relieve the fuel system pressure.
    3. Remove or disconnect the following:
      Negative battery cable Rear seat from the vehicle Inspection cover that is located under the rear seat Inlet and outlet fuel lines from the fuel pump assembly Fuel pump and gauge wiring connections 6 mounting bolts that secure the fuel pump assembly to the top of the fuel tank
    4. Raise up the fuel pump assembly and detach the fuel tubes and connector.
      Fuel gauge assembly Fuel pump with the fuel chamber
    5. Pull up the front of the fuel pump chamber and slide the chamber forward.
      Fuel pump from the chamber O-ring seal or gasket
    To install:
    1. Install or connect the following:
      Fuel pump to the fuel pump chamber and slide chamber rearward Fuel pump with the fuel pump chamber Fuel gauge assembly using a new O-ring Fuel tubes and connector. Use new hoses and clamps. 6 mounting bolts to the top of the fuel gauge unit and torque the bolts to 18-22 inch lbs. (2-2.5 Nm) Fuel pump and gauge wiring connections New inlet and outlet fuel lines to the fuel pump assembly Negative battery cable
    2. Start the vehicle, check for leaks and repair if necessary. Inspection cover and the rear seat

    Hope helps (remember comment and rates this).

    Jul 07, 2010 | 2005 Nissan Sentra

    2 Answers

    How do you change fuel sending unit?


    try to lift the the back passenger seat to see if you can access the fuel pump access, most maxima have access under the seat, you may not need to drop the tank.

    Apr 28, 2010 | 2002 Nissan Maxima

    1 Answer

    How do i replace the fuel pump in my 1993 mazda 626 2.5


    1. Relieve the fuel pressure and disconnect the negative battery cable.

    2. If not already removed, depress the clips on each end of the rear seat cushion and remove the cushion.

    3. If not already done, detach the electrical connector from the fuel pump/sending unit.

    4. Remove the attaching screws from the fuel pump/sending unit access cover and remove the cover.

    5. Disconnect the fuel supply and return hoses from the fuel pump/sending unit.

    6. Remove the attaching screws and the fuel pump/sending unit from the fuel tank.

    7. Detach the sending unit electrical connector, remove the sending unit attaching nuts and remove the sending unit from the fuel pump assembly.



    To install:

    1. Attach the sending unit to the fuel pump assembly and install the nuts. attach the sending unit electrical connector.

    2. Install the fuel pump/sending unit into the fuel tank with a new gasket and install the mounting screws.

    3. Connect the fuel supply and return lines.

    4. Install the access cover and the mounting screws.

    5. Attach the sending unit electrical connector.

    6. Position the rear seat cushion over the floor, making sure to align the retaining pins with the clips. Push down firmly until the two retaining pins are locked into the rear seat retaining clips.

    7. Connect the negative battery cable, start the engine and check for proper system operation and for fuel leaks.

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    Replace fuel pump 1990 mits mirage


    no but you do need to remove the back seat to unplug the fuel level sending unit wires before dropping the tank.

    Feb 28, 2009 | 1990 Mitsubishi Mirage Hatchback

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