Where can I get a replacement pressure regulator?

Click the link below and go through the procedure :----How to replace Fuel Pressure Regulator? http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-fuel-pressure-regulator.html
--------More details on

How to Replace a Fuel Pressure Regulator?
http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-fuel-pressure-regulator.html
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These Will help.
Thanks.

Fuel Pressure Regulator - REMOVAL & INSTALLATION(see Figures 1, 2, 3, 4, 5 and 6)

1. Relieve fuel system pressure. Disconnect the negative battery cable.
   
2. Clean dirt and grease from the regulator retaining ring.
   
3. If equipped with a bolt on-type pressure regulator, remove the fuel return line from the return tube by squeezing the tab and pulling it off.
   
4. Disconnect the vacuum line from the regulator.
   
5. If equipped with a bolt on-type regulator, perform the following:
   1. Remove the regulator attaching bolt(s)/screw(s) from the bracket.
      

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Fig. 1: Remove the 2 fuel pressure regulator-to-rail attaching bolts (fuel rail removed from vehicle)

1. If equipped with a snapring-type regulator, perform the following:
   1. Remove the snapring from the regulator.
      
2. Wrap a towel around the regulator to catch any fuel that may escape. Remove the regulator from the fuel rail using a twisting and pulling motion.

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Fig. 2: ... then remove the regulator by using a twisting and pulling motion

1. If equipped with a bolt on-type pressure regulator, disconnect the fuel return tube assembly from the pressure regulator.
   
2. Cover all openings with masking tape to prevent dirt entry. If the regulator is being reused, inspect the filter screen, if equipped, for contamination. If contamination exists, replace the filter screen

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Fig. 3: Exploded view of the regulator mounting on the fuel rail - VIN K engine shown



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Fig. 4: Some regulators, such as this 1995 VIN L, are secured with a mounting bolt

1. If further disassembly is necessary, perform the following:
   1. Remove the small regulator O-ring.
      
   2. Remove the regulator filter screen.
      
   3. Remove the large regulator O-ring.
      
   4. Remove the O-ring back-up.

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Fig. 5: Exploded view of the regulator housing (1), small O-ring (2), filter screen (3), large O-ring (4), O-ring back-up (5), regulator (6) and snapring (7)To install:

1. If the regulator was disassembled, perform the following:

Lubricate all O-rings with clean engine oil prior to assembly.

1. Install a new regulator O-ring back-up and large O-ring.
   
2. Install the regulator filter screen.
   
3. Install the small regulator O-ring.


1. If the regulator is not being replaced with a new one, lubricate new O-rings with clean engine oil, then position them on the old regulator.

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Fig. 6: If the regulator is not being replaced, remove and discard the old O-rings

1. If necessary, connect the fuel return tube to the pressure regulator and secure with the retaining nut. Tighten the nut to 13 ft. lbs. (17 Nm).
   
2. Install the regulator into the regulator housing and seat with even pressure.
   1. Install the snapring or retaining bolt(s)/screw(s), as applicable.
3. Attach the vacuum line to the regulator.
   
4. If removed, connect the fuel return tube to the pressure regulator.
   
5. Connect the negative battery cable.
   
6. Turn the ignition switch ON and OFF to allow fuel pressure back into system. Check for leaks.

Hope helps.

This usually happens when the pressure spring in the regulator breaks, sometimes from overtightening the regulator knob. The way it works is that the amount of pressure you put on the regulator spring (by twisting the knob) will be equal to the pressure on the downstream side of the regulator. When the spring breaks, the pressure on the spring is zero and so is your downstream air pressure. You need to replace the regulator.

If it acts like it is flooding while idling, but it runs fine on the road, it could be running too rich and flooding it out due to leaking injectors, bad fuel pressure regulator, or excessive fuel pressure.

I would start by replacing the Fuel Pressure Regulator since it doesn't cost as much as the injectors.
Check your fuel pressure using a Fuel Pressure Check Gauge to see if the fuel pressure regulator is maintaining the proper pressure.

Vacuum is attached to the Fuel Pressure Regulator to control system pressure. When the fuel pressure regulator is not functioning properly it causes the fuel pressure to be above normal operating pressure. This condition causes excess fuel to be injected causing a rich mixture that produces black smoke.

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

Replacing the fuel pressure regulator, involves just replacing the regulator at the end of the fuel rail in the engine compartment, but fuel pressure sensor - does this mini-van have a fuel pressure sensor?
replacing the fuel pressure regulator: (1) locate it at the end of the fuel rail in the engine compartment,
(2) relieve fuel system pressure (3) disconnect fuel pressure regulator vacuum line. (4) remove fuel pressure regulator retaining screw (retain for re-use (5) using a shop towel to catch spilled fuel, lift & twist Fuel pressure regulator to remove it from the fuel rail. (6) remove/discard retainer and spacer bracket from the fuel rail. (7) remove fuel pressure regulator from the engine fuel return pipe. (8) remove/discard Fuel Pressure Regulator inlet O-ring (9) Check Fuel Pressure Regulator filter screen for contamination - if contaminated, replace Fuel Pressure Regulator. (10) Lubricate new Fuel Pressure Regulator inlet O-ring with clean engine oil & install onto the Fuel Pressure Regulator inlet. (11) Install the fuel return pipe onto the Fuel Pressure regulator (12) Install new retainer & spacer bracket into the slot on the fuel rail.
(13) Install Fuel Pressure Regulator onto Fuel Rail & tighten Engine Fuel Return Pipe nut to 13 ft-lbs (17 Nm). (14) connect Fuel Pressure Regulator vacuum line, (15) Install Fuel Pressure Regulator attachng screw & tighten to 76 in-lbs (8.5 Nm). (16) Inspect & verify that retainer & spacer bracket is engaged in the slots on the fuel rail. Grasp & pull on the Fuel Pressure Regulator.
to ensure that the Fuel Pressure Regulator is properly seated. (17) inspect for fuel leaks with this
procedure: On 2sec,(holy rollers), off 10sec will be left on, inspect for leaks while running.

usually caused by busted diaphram in fuel pressure regulator allowing fuel to be drawn thru regulator directly to intake manifold. Pull vacuum line off regulator, plug line with golf tee, start car and watch to see if gas comes out of regulator. If yes, turn off car, replace regulator. The regulator sits near the fuel rail on the top of the engine as shown below. I will paste replacement instructions below from autozone.com in case you need to replace the regulator. Please let me know if you have any questions.

Removal & Installation

4.2L Engine

1. Relieve the fuel system pressure.
2. Remove the air cleaner outlet resonator.
3. Disconnect the engine wiring harness from the retaining clips at the front of the engine.
4. Disconnect the fuel pressure regulator vacuum line.
5. Clean any dirt from the fuel pressure regulator and the surrounding area.
6. Disconnect the fuel return pipe.
7. Remove the fuel return pipe retainer.
8. Remove the fuel pressure regulator retainer.
9. Remove the fuel pressure regulator.
10. Inspect the regulator filter screen for contamination. If contaminated, replace the fuel pressure regulator.

To install:

1. Install the regulator filter.
2. Install the new O-ring on the fuel pressure regulator.
3. Lubricate the fuel pressure regulator O-ring with clean engine oil.
4. Push the fuel pressure regulator into the regulator housing on the fuel rail.
5. Install the fuel pressure regulator retainer. Tighten the regulator retainer screw to 71 inch lbs. (8 Nm).
6. Install the fuel return pipe retainer. Tighten the return pipe retainer screw to 71 inch lbs. (8 Nm).
7. Connect the fuel return pipe.
8. Connect the fuel pressure regulator vacuum line.
9. Connect the negative battery cable.
10. Inspect for leaks:
    1. Turn ON the ignition for 2 seconds.
    2. Turn OFF the ignition for 10 seconds.
    3. Turn ON the ignition.
    4. Inspect for fuel leaks.
    
    
11. Install the engine wiring harness into the retaining clips at the front of the engine.
12. Install the air intake resonator.

Astro, Safari 1997-2005

Fuel Pressure Regulator - Removal & Installation

1. Disconnect the negative battery cable.
2. Relieve the fuel system pressure. Refer to the fuel system relief procedure in this section.
3. Remove the upper manifold assembly.
4. Remove the fuel pressure regulator vacuum tube.
5. Disassemble the fuel pressure regulator snapring retainer.
6. Remove the fuel pressure regulator assembly and the O-rings. Discard the O-rings, filter and back-up O-rings.
   
   
   Fig. The fuel pressure regulator is retained by this clip
   
   
   
   Fig. Replace the O-rings whenever the fuel pressure regulator is removed
   

To install:

1. Lubricate the O-rings with clean engine oil and install as an assembly.
2. Install the fuel pressure regulator, attach the vacuum tube.
3. Install the snapring retainer.
4. Install the upper manifold assembly.
5. Connect the negative battery cable.

1. Relieve the fuel system pressure.
2. Remove the upper intake manifold assembly.
3. Remove the fuel pressure regulator retainer clip (5).
4. Pull and twist the fuel pressure regulator (6) in order to remove the fuel pressure regulator from the fuel pressure regulator housing using a shop towel to catch any spilled fuel.
5. Remove the regulator seal lower O-ring (3).
6. Remove the regulator assembly filter (2).
7. Remove the regulator seal upper O-ring (1).
8. Remove the regulator seal backup ring (7).
9. Discard the O-rings.
   
   
   Fig. Exploded view of throttle body assembly (click for zoom)
   

To install:

NOTE If the fuel pressure regulator is to be reinstalled, inspect the filter screen for contamination. If the filter screen is contaminated, replace the regulator.

1. Lubricate the new O-rings with clean engine oil.
2. Install the regulator seal backup ring (7).
3. Install the regulator seal upper O-ring (1).
4. Install the regulator assembly filter (2).
5. Install the regulator seal lower O-ring (3).
6. Assemble the regulator (6) with the vacuum tube pointing down into the regulator retainer clip.
7. Install the fuel pressure regulator retainer clip (5).
8. Install the upper manifold assembly.
9. Connect the negative battery cable.
10. Inspect for leaks.
    1. Turn the ignition ON , with the engine OFF , for 2 seconds.
    2. Turn the ignition OFF for 10 seconds.
    3. Turn the ignition ON , with the engine OFF .
    4. Inspect for fuel leaks.
11. Install the engine cover.

Hope helps with this (remember comment and rated this).

Release fuel pressure by removing fuel pump relay and turning engine over to release pressure. Place a rag to catch any fuel under regulator Fuel pressure regulator has a locking clip pry clip off remove vacuum line pull regulator out with twisting motion,replace fuel pressure regulator install clip connect vacuum line install relay. Check for leaks,your done.

IF FUEL FILTER HAS BEEN REPLACED.FUEL PRESSURE REGULATOR IS GOING BAD OR NOT GETTING VACUUM.CHECK VACUUM LINE GOING TO FUEL PRESSURE REGULATOR.MAKE SURE ITS GETTING VACUUM.IF YOU SEE GAS IN VACUUM LINE TO REGULATOR.REPLACE FUEL PRESSURE REGULATOR.IF ALL IS GOOD FUEL PUMP GOING BAD.

the fuel pressure regulator is on the end of the fuel rail it is held on by a torx screw relieve the fuel pressure using the schrader valve on the fuel rail remove regulator holding screw and replace new regulator be carful not to damage o-rings on new regulator