My pump is leaking at filter connection. What do I need to fix this?

Looks like you covered everything.
P0171 OBD II Trouble Code

You will need to remove the gas tank and replace the fuel level sensor inside the fuel tank.
The level sensor is part of the electric fuel pump "module" Here is how to change that part.

• 1. Start the van's engine. Open the fuel cap and remove the fuel pump relay from the engine's fuse box. Look for the engine to stall, signaling that the fuel pressure is gone.
  
• 2Disconnect the van's negative battery cable.
  
• 3. Unbolt the fuel tank's straps and lower the tank just enough to access the fuel pump flange. You can have a second person lower the tank, but it might be easier to use a floor jack with a wood block.
  
• 4Remove the small locking pin on the pump's electrical connector with needle-nose pliers, and disconnect the electrical connector. Press the retainer tabs on the fuel lines and disconnect them from the pump.
  
• 5Unscrew the pump's locking ring with a strap wrench or a similar hand-made tool that can grip the large ring and turn it.
  
• 6Pull the water pump out of the tank, then remove and discard the O-ring from the fuel tank.
  
• 7Pry back the locking tabs connecting the inlet filter to the pump reservoir using a thin screwdriver and remove the filter. This is only needed if this filter is in good condition and you must transfer it to the new pump.
  

Installation

• 8Lubricate the O-ring for the filter with engine oil and connect it to the outlet of the filter. Push the filter onto the pump reservoir's inlet and make sure the locking tabs engage.
  
• 9Install a new O-ring onto the seating hole on the fuel tank.
  
• 10Insert the pump module into the tank, tilting it at an angle and making sure you don't damage the filter or the pump float. Make sure the module is properly seated.
  
• 11Screw the retaining ring into position on the pump module.
  
• 12Reconnect the fuel lines to the pump using their quick-connect fittings and the electrical connector with its locking pin.
  
• 13Connect the tank back to the van using its straps and strap bolts.
  
• 14Reconnect the fuel pump relay and negative battery cable
  

If you have the V6 (2.5L) engine, be advised: it's a wearing task. Just getting to the radiator drain plug can be a problem without a 3/8 inch drive ratchet, a 3 inch extension, a universal joint. and a 19 mm socket. The drain plug is on the passenger side of the radiator on the engine side. The 19mm socket will fit over the drain plug to turn it open.
The coolant plumbing on this engine is the craziest I have ever seen. The thermostat is on the rear face of the engine (where the radiator hoses connect), but not on the upper hose where it connects to the upright pipe with the radiator cap on it, it is on the lower hose connection. Pull that hose off the housing, and remove the three bolts holding the thermostat housing to the engine. It will help if you first remove the big air inlet hose from the air filter housing to the throttle body. I wouldn't even bother with the thermostat till you have found the leak. Is any coolant leaking from the front of the engine, dripping off the bottom behind the crank pulley? That would be a water pump problem or SEAL, an o-ring on the back of the water pump. Now get on the driver's side and look around on the rear of engine nearest the firewall where engine and transaxle mate. Look down there for signs of coolant coming from rear of engine and running down onto the transaxle case. There is a metal pipe laying in the valley below the lower intake manifold, connecting the water pump at the front and the rear housing where the radiator hoses and heater hoses connect. This metal pipe uses an o-ring for a seal into the water pump, and the same size o-ring to connect to the rear housing. If one of those o-rings is leaking, you have a big problem getting to it.. I took the rear housing off once (never again!), Now I'm taking the water pump off to fix a leak. The water pump is run by the timing belt, so the front of engine needs to be stripped down, and the timing belt removed to take off the water pump. That metal pipe is held in place by a bracket with one bolt on the rear of engine; it may require taking the lower intake off (again) to get to both of those pesky o-rings. I hope you don't have the same problem, and if you have the 4 cylinder engine, the thermostat is a snap to replace, plus you don't have that crazy plumbing problem.

Normally buy a box of orings all sizes sure too get suitable o rings in it

Check the oil filter. The old gasket might be stuck on the engine (two gaskets stuck together), or the new gasket might be defective, misaligned or missing.

If you can find it seperate. same size and grooves, yes. It is just very hard to do so. It would probably be best to fix the whole thing. But, it is your choice. If you need anything, just let me know. I am here to help.

300M, Concorde, Intrepid, LHS, 1998-2004 - Fuel Filter Removal & Installation The fuel filter mounts to the frame rail in front of the fuel tank. The inlet and outlet ends of the filter are marked for installation purposes. Install the fuel filter making certain that it is properly orientated.

NOTE The fuel filter is part of the fuel pressure regulator mounted on the fuel pump module.

1. Before servicing the vehicle, refer to the Precautions section.
2. Properly relieve the fuel system pressure.
3. Lower the fuel tank.
4. Remove or disconnect the following:
   Negative battery cable Purge and vent lines Fuel line from the pressure regulator Filter/regulator by pushing in the locking tab, turning the regulator to unlock it and pulling the it straight up

To install:




Fig. Cut away view of the fuel filter/pressure regulator

1. Push the fuel filter/regulator into the fuel pump module and turn to lock it into position.
2. Connect the fuel lines and install the tank.
3. Start the engine, check for leaks and repair if necessary.

Fuel Pump - Removal & Installation
The in-tank fuel pump module contains the fuel pump and pressure regulator which adjusts fuel system pressure. Fuel pump voltage is supplied through the fuel pump relay.

The fuel pump is serviced as part of the fuel pump module. The fuel pump module is installed in the top of the fuel tank and contains the electric fuel pump, fuel pump reservoir, inlet strainer fuel gauge sending unit, fuel supply and return line connections and the pressure regulator. The inlet strainer, fuel pressure regulator and level sensor are the only serviceable items. If the fuel pump requires service, replace the fuel pump module.

1. Before servicing the vehicle, refer to the Precautions section.
2. Properly relieve the fuel system pressure.
3. Remove or disconnect the following:
   Negative battery cable Fuel tank
4. Clean the top of the tank to remove any loose dirt.
   Fuel lines from the fuel pump module by squeezing the quick-connect fitting with thumb and forefinger
   
   
   
   
   Fig. Using special tool 6856, remove the fuel pump module locknut
   Fuel pump module electrical connector from the top of the fuel pump module
5. Using special tool 6856, remove the fuel pump locknut by turning it counterclockwise.
   CAUTION The fuel reservoir of the fuel pump module does not empty out when the tank is drained. The fuel in the reservoir may spill out when the module is removed.
6. Remove the fuel pump and O-ring from the tank and discard the O-ring.
   

To install:

1. Thoroughly clean all parts. Wipe the seal area of the tank clean. Place a new O-ring on the ledge between the tank threads and the pump module opening.
2. Position the fuel pump module in the tank. Be sure the alignment tab on the underside of the pump module flange sits in the corresponding notch in the fuel tank.
3. While holding the fuel pump module in place install the locking ring and torque to 40 inch lbs. (5 Nm) using special tool 6856 or a spanner-type tool.
4. Install or connect the following:
   Fuel tank Fuel pump module electrical connector Negative battery cable
5. Fill the fuel tank with fuel. Install the fuel filler cap. Turn the ignition switch to the ON position to pressurize the system. Check the fuel system for leaks.

Hope this helped.

Vehicles equipped with NGC engine control modules use an NVLD pump and system. Vehicles equipped with JTEC engine control modules use a leak detection pump. Refer to Leak Detection Pump (LDP) for additional information.
The Natural Vacuum Leak Detection (NVLD) system is the next generation evaporative leak detection system that will first be used on vehicles equipped with the Next Generation Controller (NGC). This new system replaces the leak detection pump as the method of evaporative system leak detection. This is to detect a leak equivalent to a 0.020 (0.5 mm) hole. This system has the capability to detect holes of this size very dependably.


Removal & Installation

1. Raise and support vehicle.
2. Remove left-rear tire.
3. Remove plastic shield (4) in front of left-rear tire. Access to both the EVAP canister (1) and NVLD pump (6) is from the area in front of the removed tire.
4. Disconnect electrical connector at NVLD pump.
5. Remove vapor line at NVLD pump. Pry outward on tab (3) and rotate pump (6) clockwise about 70 for removal.
6. Remove NVLD pump O-ring (5) from EVAP canister (1).
   

To Install:

1. Install new NVLD pump O-ring (5) to EVAP canister (1).
2. Position NVLD pump (6) into EVAP canister (1).
3. Rotate pump (6) until tab aligns with notch in EVAP canister (1).
4. Carefully install vapor/vacuum lines to NVLD pump.
   WARNING The vapor/vacuum lines and hoses must be firmly connected. Check the vapor/vacuum lines at the NVLD pump, filter and EVAP canister purge solenoid for damage or leaks. If a leak is present, a Diagnostic Trouble Code (DTC) may be set.
   
5. Connect electrical connector to pump.
6. Install plastic shield in front of left-rear tire.
7. Install left-rear tire.
   
   
   Fig.
   
   
   
   Fig.
   

Have a nice day (remember rated this help).

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.
    

There is an o-ring gasket on the steel end of the fuel line that seals the filter from leaking.