2004 saab rear seat removal

I think that generation of CRV uses an 'In Tank' fuel filter. It is built into the fuel pump and fuel gauge housing.
You will need access to the top of the fuel tank. If you lift the rear seat base and remove the plastic trim cover under it. There should be a screw down access panel with wires rising out of it. Remove this to get access to the top of the tank.

Two steps:
1) Inside the car under the rear seats there is a carpet flap that needs to be lifted, under it you will find a plastic lid. Remove the plastic lid under which you will find the fuel lines and electrical cables for the fuel pump and fuel gauge, remove all. Noting exactly which fuel line went where. You will have to remove all the fuel in the tank. Siphon it off or if only a little is left you can do it in the next stage.
2) Jack up car at the rear on both sides. The fuel tank is held by two metal straps that can be released with two bolts. Losen bolts without removing them completely then loosen all hoses and check that the tank is empty. If it is empty place jack under the tank (with wood to spread the load) and take the weight then remove the bolts so that the straps are free. Slowly let the tank down.

Looks like the sensor inside the gas tank is shot! It will need to be replaced. The tank needs to be removed to pull out the sensor and replace it....the empty light will work normally after that!

hi Donna.
go to this link might help you find out.
how to change fuel pump on 1996 SAAB 900s Google Search

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).

the fuel pump is located inside the fuel tank, there may be an access plate under the rear seat cushion

under the rear seat is a hole that has the wire connectors going to the fuel pump, see if the wire connectors are hooked up properly. if not than you will have to replace the fuel pump.its a complete assembly. in order to that you will have to remove the gas tank. orielly sells an after market pump for 400. dollars and it will include the float and gas tank sending unit.

this problem is caused by a defective gas gauge sending unit, it is located inside the gas tank, u must remove the gas tank to replace the part

It is in the fuel tank....here is the directions on how to do the job:

Removal & Installation

1. Before servicing the vehicle, refer to the Precautions Section.
   
2. Relieve the fuel system pressure.
   
3. Disconnect the negative battery cable.
   
4. Remove the rear seat cushion from the vehicle.
   
5. Clean any dirt that has accumulated around the fuel pump cover so it will not enter the tank during pump removal and installation.
   
6. Remove the fuel pump cover.
   
7. Disconnect the fuel gauge connector, hoses, and the gauge.
   
8. Disconnect the fuel pump electrical connector.
   
9. Remove the fuel pump from the bracket assembly.
   
10. Remove the seal ring and discard.
    

To install:

1. Clean the fuel pump mounting flange, fuel tank mounting surface and seal ring groove.
   
2. Apply a light coating of grease on a new seal ring to hold it in place during assembly.
   
3. Install the seal ring.
   
4. Install the fuel pump to the bracket assembly carefully to ensure the filter is not damaged. Be sure the seal ring remains in the groove.
   
5. Hold the pump assembly in place, and pull the fuel pump down so that it is tight against the bracket.
   
6. Connect the fuel pump electrical connector.
   
7. Connect the fuel gauge, hoses, and gauge connector.
   
8. Install the fuel pump cover.
   
9. Install the rear seat cushion.
   
10. Connect the negative battery cable.
    
11. Start the engine and check for proper system operation and for fuel leaks.
    

On the e36 its very common for the fuel level resistor to pack up. This is found on the fuel sender unit.

To gain access to this you need to remove the rear seat base and possibly a metal plate on the offside (right rear passenger). This will give you access to the upper part of the fuel tank. You'll then find a large retainer in which you will need a special tool to remove ... or a flat bladed screwdriver and hammer to gently tap it loose and unscrew. Disconnect the fuel lines but keep the connector on if possible (or reconnect after sender removed) and lift up the sender seated on the fuel tank. You can now see the fuel level seat (a black plastic piece) attached to small metal pipe connecting to the resistor. By moving the fuel level seat up and down you should notice the fuel level gauge on the instrument cluster go up and down respectively (need ignition on). Hopefully this should determine the cause for your problem.

I'm not sure if the resistor comes seperate on these or if the sender has to be bought complete.

Hope this helps!