How to replace fuel module regulator - 1999 Oldsmobile Alero

searching why, (buy an FSM and no more guessing...? )
basic service?
low fuel pressure? why?

ive got near a 1/2 million + miles on jeeps since 1988.
never stranded, but i do my service,.
my last chick-o-dee. was 99. with 5sp, all with that.
my 08 JK same.
the fuel filters on old loop systems is in the front of the tank
then later, , EPA forced most parts into tank with the new loop
or dead head systems. (EPA wants fuel cold .so, that is it)
i dont find parts hard to find, jeeps excel at that. vast resources.
nor hard electrical if you had a 2007+ then that be different.

id just crawl under car and gander, at fuel line but here we go
ill do it , online for you.
4Liter 98
options , with the 20gallon tank there is filter. on top of pump , in tank.
that means to me there are different filters there. by size tank .
if you dont see a filter, that means its in the tank.
at
http://www.factorychryslerparts.com/productSearch.aspx?&ukey_make=1064&modelYear=1998&ukey_model=15525&ukey_trimLevel=0&ukey_driveline=0&ukey_Category=0&numResults=50&sortOrder=Relevance&isOnSale=0&isAccessory=0&isPerformance=0&searchTerm=

so

ill paste the FSM page on this topic

he fuel filter is an integral component of the fuel pressure regulator, which is mounted on top of the fuel pump module, located in the fuel tank. When the fuel filter/regulator assembly requires service, the fuel tank must be removed from the vehicle, however, the fuel pump module does not need to be removed.

1. Disconnect the battery ground cable.
2. Relieve the fuel system pressure. Refer to Section 5 for the proper procedure.
3. Remove the fuel tank assembly.
4. Clean the area around the fuel filter/regulator.
5. Disengage the retaining clamp from the top of the filter/regulator assembly. Discard the retaining clamp.
6. Using 2 small prying tools, pry the filter/regulator assembly out from the top of the fuel pump module. The filter/regulator assembly will unsnap from the fuel pump module.
7. Remove and discard the mounting gasket below the filter/regulator.
8. Before discarding the fuel filter/pressure regulator assembly, inspect the assembly to verify that the O-rings are intact. If the smallest of the 2 O-rings cannot be found on the bottom of the filter/regulator, it may be necessary to remove it from the fuel inlet passage in the fuel pump module.
9. Clean the recessed area in the pump module where the filter/regulator assembly is to be installed.
10. Check the replacement filter/regulator assembly to make sure that the new O-rings are already installed on the assembly.
11. Apply a small amount of clean engine oil to the O-rings.
12. Install a new gasket on top of the fuel pump module.
13. Press the new fuel filter/pressure regulator assembly into the top of the fuel pump module until it snaps into position (a positive click must be heard or felt).
14. The arrow on top of the fuel pump module should be pointed towards the front of the vehicle (12 O'clock position).
15. Turn the filter/regulator assembly until the supply tube (fitting) is pointed to the 11 O'clock position.
16. Install new retainer clamp (the clamp snaps over the top of the filter/regulator and locks to the flanges on the pump module).
17. Install the fuel tank assembly.
18. Connect the negative battery cable.
19. end

how is that ?

This is a returnees fuel system. As you mentioned the fuel pressure is regulated at the fuel pump module. If you don't have pressure after replacing the pump and you did not replace the module and you installed two pumps already than the problem is likely the regulator in the module. Replace the whole assembly!

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Fuel Pressure Regulator Removal & Installation To Remove:

1. Spread tangs on pressure regulator retainer.
2. Pry fuel pressure regulator out of housing.
3. Ensure both upper and lower O-rings were removed with regulator.

To Install:

1. Lightly lubricate the O-rings with clean engine oil and place them into opening in pump module.
2. Push regulator into opening in pump module.
3. Tabs hold regulator in housing.

The fuel filter is an integral component of the fuel pressure regulator, which is mounted on top of the fuel pump module, located in the fuel tank. When the fuel filter/regulator assembly requires service, the fuel tank must be removed from the vehicle, however, the fuel pump module does not need to be removed.

1. Disconnect the battery ground cable.
2. You dont have to relieve your fuel systems pressure because your jeep has an automatic bleeder.
   
3. Remove the fuel tank assembly.
4. Clean the area around the fuel filter/regulator.

Fig. Fig. 5: Remove the fuel filter/pressure regulator retaining clip from the top of the assembly

Fig. Fig. 6: Replace the old fuel filter/pressure regulator mounting gasket

1. Disengage the retaining clamp from the top of the filter/regulator assembly. Discard the retaining clamp.
2. Using 2 small prying tools, pry the filter/regulator assembly out from the top of the fuel pump module. The filter/regulator assembly will unsnap from the fuel pump module.
3. Remove and discard the mounting gasket below the filter/regulator.
4. Before discarding the fuel filter/pressure regulator assembly, inspect the assembly to verify that the O-rings are intact. If the smallest of the 2 O-rings cannot be found on the bottom of the filter/regulator, it may be necessary to remove it from the fuel inlet passage in the fuel pump module.

To install:

Fig. Fig. 7: Check the condition of the fuel filter/pressure regulator O-rings

1. Clean the recessed area in the pump module where the filter/regulator assembly is to be installed.
2. Check the replacement filter/regulator assembly to make sure that the new O-rings are already installed on the assembly.
3. Apply a small amount of clean engine oil to the O-rings.
4. Install a new gasket on top of the fuel pump module.
5. Press the new fuel filter/pressure regulator assembly into the top of the fuel pump module until it snaps into position (a positive click must be heard or felt).
6. The arrow on top of the fuel pump module should be pointed towards the front of the vehicle (12 O&rsquoclock position).
7. Turn the filter/regulator assembly until the supply tube (fitting) is pointed to the 11 O&rsquoclock position.
8. Install new retainer clamp (the clamp snaps over the top of the filter/regulator and locks to the flanges on the pump module).
9. Install the fuel tank assembly.
10. Connect the negative battery cable.

If it runs on start fluid and nothing else its obviously a fuel concern fuel pump ,fuel pump relay ,check fuel pressure at the regulator that you replaced.

Fuel Filter for 5.2 L Removal & Installation To Remove:


NOTE: The combination fuel filter and fuel pressure regulator is located on the top of the fuel pump module.

1. Before servicing the vehicle refer to the precautions at the beginning of this section.
2. Remove or disconnect the following:
   • The fuel tank
   • Any debris around the filter/regulator to prevent contaminants from entering the pump module
   • The fuel filter/regulator from its rubber grommet by twisting and pulling straight up CAUTION
     To prevent damage to the coiled fuel line, ensure the filter/regulator is not more than three inches from the fuel pump module.
     
     
     
   • The old fuel line clamp, by carefully cutting it ensuring not to damage the plastic fuel line (discard the clamp)
   • The plastic fuel line from the filter/regulator by gently pulling downward
   • The filter/regulator from the fuel pump module

To Install:

1. Install or connect the following:
   • A new clamp over the plastic fuel line
   • The filter/regulator to the fuel line NOTE: Rotate the filter/regulator in the fuel line until it is points toward the front of the tank.
     
   • The line clamp to the fuel line using special Hose Clamp Pliers number C-4124 NOTE: Do not use conventional side cutters to tighten this type of clamp.
     
   • The filter/regulator into the rubber grommet, pressing by hand
2. Rotate the filter/regulator until it points towards the front of the vehicle.
3. Install the fuel tank.
4. Check for fuel leaks.

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.

It most definatly is in the tank. and the tank will have to be dropped. Unless you have a lift, it will be a pain in the ****. Especially if there is a full tank of gas.

Here ya go! Please don't forget to rate!

NOTE: A combination fuel filter and fuel pressure regulator is used on all engines. It is located on the top of the fuel pump module.
To Remove:

1. Before servicing the vehicle, refer to the precautions at the beginning of this section.
2. Drain and remove fuel tank.
3. Clean area around filter/regulator to prevent contaminants from entering pump module.
4. Remove or disconnect the following:
   • Fuel filter/regulator by twisting and pulling up CAUTION
     Do not pull filter/regulator more than three inches from fuel pump module.
     
   • Old fuel tube clamp by gently cutting clamp, taking care not to damage fuel tube
   • Plastic fuel tube from filter/regulator by gently pulling downward
   • Filter/regulator from fuel pump module

To Install:

1. Install or connect the following:
   • New clamp over plastic fuel tube
   • Filter/regulator to fuel tube by rotating filter/regulator in fuel tube until it is pointed towards front of tank
   • Line clamp to fuel line using special hose clamp pliers (number c-4124 or equivalent)
   • Filter/regulator (pressing by hand) into rubber grommet
2. Rotate filter/regulator until pointed towards front of vehicle
3. Install fuel tank.
4. Check for fuel leaks.

The combination Fuel Filter/Fuel Pressure Regulator is located on the fuel pump module. The fuel pump module is located on top of fuel tank.

The filter/regulator may be removed without removing fuel pump module although fuel tank must be removed.

REMOVAL

1. Remove fuel tank. Refer to Fuel Tank Removal/Installation.
2. Clean area around filter/regulator.
3. Disconnect fuel line at filter/regulator. Refer to Quick-Connect Fittings for procedures.
4. Remove retainer clamp from top of filter/regulator. Clamp snaps to tabs on pump module. Discard old clamp.
5. Pry filter/regulator from top of pump module with 2 screwdrivers. Unit is snapped into module
6. Discard gasket below filter/regulator.
   1. Before discarding filter/regulator assembly, inspect assembly to verify that O-rings are intact. If the smallest of the two O-rings can not be found on bottom of filter/regulator, it may be necessary to remove it from the fuel inlet passage in fuel pump module.
   INSTALLATION
   
   1. Clean recessed area in pump module where filter/regulator is to be installed.
   2. Obtain new filter/regulator (two new O-rings should already be installed)
   3. Apply a small amount of clean engine oil to O-rings. Do not install O-rings separately into fuel pump module. They will be damaged when installing filter/regulator.
   4. Install new gasket to top of fuel pump module.
   5. Press new filter/regulator into top of pump module until it snaps into position (a positive click must be heard or felt).
   6. The arrow molded into top of fuel pump module should be pointed towards front of vehicle (12 O'clock position).
   7. Rotate filter/regulator until fuel supply tube (fitting) is pointed towards front of vehicle (12 O'clock position).
   8. Install new retainer clamp (clamp snaps over top of filter/regulator and locks to flanges on pump module).
   9. Connect fuel line at filter/regulator. Refer to Quick-Connect Fittings for procedures.
   10. Install fuel tank. Refer to Fuel Tank Removal/Installation.

WARNING: THE FUEL SYSTEM IS UNDER CONSTANT FUEL PRESSURE EVEN WITH THE ENGINE OFF. THIS PRESSURE MUST BE RELEASED BEFORE SERVICING FUEL TANK .

Two different procedures may be used to drain fuel tank (lowering tank or using DRB scan tool).

The quickest draining procedure involves lowering the fuel tank.

As an alternative procedure, the electric fuel pump may be activated allowing tank to be drained at fuel rail connection. Refer to DRB scan tool for fuel pump activation procedures. Before disconnecting fuel line at fuel rail, release fuel pressure. Refer to the Fuel System Pressure Release Procedure for procedures. Attach end of special test hose tool number 6541, 6539, 6631 or 6923 at fuel rail disconnection (tool number will depend on model and/or engine application). Position opposite end of this hose tool to an approved gasoline draining station. Activate fuel pump and drain tank until empty.

If electric fuel pump is not operating, tank must be lowered for fuel draining. Refer to following procedures.

FUEL TANK REMOVAL

1. Disconnect negative battery cable at battery.
2. Release fuel system pressure. Refer to the Fuel System Pressure Release.
3. Raise and support vehicle.
4. If Equipped: Remove fuel tank skid plate.
5. Remove 4 fuel hose shield mounting bolts and remove fuel hose shield from body.
   1. Remove fuel tank fill hose and vent hose clamps at fuel tank filler tube. Remove both hoses at fuel filler tube.
   2. Remove exhaust tailpipe heat shield mounting bolts and remove shield. CAUTION: To protect fuel tank from exhaust heat, this shield must reinstalled after tank installation.
   3. Place a hydraulic jack to bottom of fuel tank. WARNING: PLACE A SHOP TOWEL AROUND FUEL LINES TO CATCH ANY EXCESS FUEL .
      1. Disconnect fuel supply line from fuel extension line near front of fuel tank. Refer to Fuel Tubes/Lines/Hoses and Clamps. Also refer to Quick-Connect Fittings for procedures.
      2. Disconnect EVAP canister vent line near front of tank.
      3. Disconnect fuel pump module electrical connector (pigtail harness) near front of tank. Harness connector is clipped to body.
         1. Remove two fuel tank strap nuts. Position both tank support straps away from tank.
         2. Carefully lower right side of tank while feeding both fuel hoses through access hole in body. Fuel Tank Full And Not Drained Using DRB Scan Tool: To prevent fuel loss through hoses, keep left side of tank higher than right side while lowering. Do not allow hose openings to drop lower than top of tank.
         3. Continue lowering tank until clear of vehicle. Place tank on floor with left side (hose side) higher than right side
            1. Drain tank by removing fuel fill hose at tank. Fuel fill hose is largest of 2 hoses. Insert the drain hose (from an approved gasoline draining station) into hose opening. Drain tank until empty.
            2. If fuel pump module removal is necessary, refer to Fuel Pump Module Removal/installation for procedures.
            INSTALLATION
            
            1. If fuel pump module is being installed, refer to Fuel Pump Module Removal/installation for procedures.
            2. Install fuel fill/vent hoses to tank fittings. To prevent hose from kinking, rotate each hose until index mark on hose is aligned to index tang on fuel tank.
            3. Install hose clamps to hoses. Position clamps between index marks on each hose.
            4. Position fuel tank to hydraulic jack.
            5. Raise tank into position while guiding fuel fill and vent hoses into and through access hole in body.
            6. Continue raising tank until positioned to body.
            7. Attach two fuel tank mounting straps and mounting nuts. Tighten nuts to 10 Nm (90 in. lbs.) torque. Do not over tighten nuts.
            8. Install both fuel hoses to fuel fill tube. Tighten both retaining clamps.
            9. Position fuel hose shield to body. Install and tighten 4 mounting bolts.
            10. Connect fuel pump module pigtail harness electrical connector near front of tank.
            11. Connect fuel pump module supply line near front of tank. Refer to Quick-Connect Fittings for procedures.
            12. Connect EVAP hose near front of tank.
            13. Install exhaust tailpipe heat shield.
            1. Install fuel tank skid plate (if equipped).
            1. Lower vehicle and connect battery cable to battery.