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Regulator won't engage.

The regulator was backed out too far and now will not engage. Do I need to replace the manifold? If so, who carries parts?

Posted by Anonymous on

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You need to provide the make and model for a proper answer. Some have regulator kits others you must replace the whole manifold.

Posted on Apr 25, 2015

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The part you turn on a regulator pushes on a spring, the spring pushes a valve that equalizes regulated air. Loosening the setting will cut off all air, tightening opens the valve. The valve may be stuck. tear it apart and clean it if tightening it won't work it.

Posted on Apr 23, 2015

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If you can provide a description of make model year and a photo of the regulator, we may be able to help with the problem.
as it stands?

Posted on Apr 22, 2015

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Im gonna rplace the fuel pressure regulator. In the haynes manuel it says that you need to remove the fuel rail. Ive asked a few people and they said they dont think it is necassary it is an 03 impala. ...


Not sure why Haynes says to do that. below is instructions from autozone.com, and none of the engines require the fuel rail to come off. That said, if you have the 3.4, you may need to pull the upper intake manifold.


Removal & Installation The need to work as cleanly as possible cannot be over-emphasized. Even the smallest amount of dirt, if allowed into the fuel pressure regulator and/or the fuel rail, will find its way to the fuel injectors. The nozzle openings of the injectors are very small. Keep hands and tools clean. Clean the areas to be disconnected with a suitable solvent. Carefully cover open fittings and connections to keep out foreign material. Dirt in the injectors almost guarantees a clogged fuel injector and engine performance problems.

3.4L (VIN E) Engines

  1. Disconnect the negative battery cable.
  2. Relieve the fuel system pressure.
  3. Remove the upper intake manifold assembly.
  4. Disconnect the vacuum line from the pressure regulator.
  5. Remove the regulator retaining screw and remove the retainer bracket. Using a clean shop cloth to catch fuel spillage, carefully pull the regulator from the fuel rail. Twist the regulator slightly while removing to ease removal. Discard the O-ring.

    0996b43f802307fd.jpg enlarge_icon.gifenlarge_tooltip.gif

    Fig. Exploded view of the fuel pressure regulator mounting-3.4L (VIN E) engines


To install:
  1. Clean all parts well. DO NOT use shop compressed air to test or clean a fuel pressure regulator. Clean the fuel pressure regulator screen, if necessary. DO NOT immerse the fuel pressure regulator in a solvent bath or it will be damaged.
  2. If the filter screen has been contaminated, it should be removed and the pressure regulator replaced.
  3. Lubricate a new pressure regulator O-ring with clean engine oil and install on the regulator inlet.
  4. Install the fuel return pipe to the regulator.
  5. Install a new retainer and spacer bracket into the slot on the fuel rail and install the pressure regulator to the fuel rail. Tighten the fuel return line nut to 13 ft. lbs. (17 Nm).
  6. Connect the vacuum line to the pressure regulator and install the retainer screw. Tighten to 76 inch lbs. (8.5 Nm).
  7. Inspect and verify that the retainer and spacer bracket is engaged in the slots in the fuel rail. Grasp and pull on the regulator to ensure that it is properly seated.
  8. Install the upper intake manifold.
  9. Connect the negative battery cable.
  10. Inspect for leaks using the following procedure:
    1. Turn the ignition switch to the ON position for 2 seconds.
    2. Turn the ignition switch to the OFF position for 10 seconds.
    3. Turn the ignition switch to the ON position again.
    4. Inspect all areas for fuel leaks.

3.8L Engines
  1. Disconnect the negative battery cable.
  2. Relieve the fuel system pressure.
  3. Clean any dirt from the fuel pressure regulator retaining ring.
  4. Remove the vacuum hose from the pressure regulator.
  5. Remove the snaprings. Twist the regulator slightly and pull the pressure regulator from the fuel rail. Use a shop towel to catch fuel spillage as the regulator is removed.
  6. Remove the O-rings and O-ring back-up.

To install:
  1. Clean all parts well. DO NOT use shop compressed air to test or clean a fuel pressure regulator. Clean the fuel pressure regulator screen, if necessary. DO NOT immerse the fuel pressure regulator in a solvent bath or it will be damaged.
  2. If the filter screen has been contaminated, it should be removed and the pressure regulator replaced.
  3. Lubricate the new pressure regulator O-rings with clean engine oil. Install the O-ring back-up, the large O-ring and then the small O-ring. Install the pressure regulator and secure with the snapring.
  4. Attach the vacuum hose.
  5. Connect the negative battery cable.
  6. Inspect for leaks using the following procedure:
    1. Turn the ignition switch to the ON position for 2 seconds.
    2. Turn the ignition switch to the OFF position for 10 seconds.
    3. Turn the ignition switch to the ON position again.
    4. Inspect all areas for fuel leaks.

  1. Disconnect the negative battery cable.
  2. Relieve the fuel system pressure.
  3. Clean any dirt from the fuel pressure regulator retaining ring.
  4. Remove the vacuum hose from the pressure regulator.
  5. Remove the snaprings. Twist the regulator slightly and pull the pressure regulator from the fuel rail. Use a shop towel to catch fuel spillage as the regulator is removed.
  6. Remove the O-rings and O-ring back-up.

To install:
  1. Clean all parts well. DO NOT use shop compressed air to test or clean a fuel pressure regulator. Clean the fuel pressure regulator screen, if necessary. DO NOT immerse the fuel pressure regulator in a solvent bath or it will be damaged.
  2. If the filter screen has been contaminated, it should be removed and the pressure regulator replaced.
  3. Lubricate the new pressure regulator O-rings with clean engine oil. Install the O-ring back-up, the large O-ring and then the small O-ring. Install the pressure regulator and secure with the snapring.
  4. Attach the vacuum hose.
  5. Connect the negative battery cable.
  6. Inspect for leaks using the following procedure:
    1. Turn the ignition switch to the ON position for 2 seconds.
    2. Turn the ignition switch to the OFF position for 10 seconds.
    3. Turn the ignition switch to the ON position again.
    4. Inspect all areas for fuel leaks.

Mar 16, 2011 | 2003 Chevrolet Impala

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Fuel Pump Regulator on 2003 Buick Century 6 cyclinder. How much trouble is it to replace?


easy,it's on the fuel rail,make sure that is the problem and not the pump,check fuel pressure before the regulator.











TIM..........

Oct 25, 2010 | 2003 Buick Century

2 Answers

Have 1998 safari 4.6 throttle body cannot find fuel pressure regulator


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.

    5d30462.jpg
    Fig. The fuel pressure regulator is retained by this clip


    913de3d.jpg
    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.

    a29bed6.jpg
    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).

Aug 05, 2010 | GMC Safari Cars & Trucks

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How to change a fuel pressure regulator in a 1997 pontiac grand prix


GM Century/Lumina/Grand Prix/Intrigue 1997-2000
Fuel Pressure Regulator - Removal & Installing

The fuel pressure regulator is a diaphragm-operated relief valve with fuel pump pressure on one side and regulator spring pressure and intake manifold vacuum on the other side. The regulator's function is to maintain a constant fuel pressure across the injectors at all times. The pressure regulator compensates for engine load by increasing fuel pressure as engine vacuum drops.

The fuel pressure regulator is serviced as a separate component. When servicing the pressure regulator, make sure that the O-ring back-up, large O-ring, filter screen and small O-ring are properly positioned on the pressure regulator.


44dcbf8.jpg Fig. Cutaway view of a typical fuel pressure regulator


REMOVAL & INSTALLATION
The need to work as cleanly as possible cannot be over-emphasized. Even the smallest amount of dirt, if allowed into the fuel pressure regulator and/or the fuel rail, will find its way to the fuel injectors. The nozzle openings of the injectors are very small. Keep hands and tools clean. Clean the areas to be disconnected with a suitable solvent. Carefully cover open fittings and connections to keep out foreign material. Dirt in the injectors almost guarantees a clogged fuel injector and engine performance problems.
3.1L and 3.4L (VIN E) Engines
  1. Disconnect the negative battery cable.
  2. Relieve the fuel system pressure using the procedures found in this section.
  3. Remove the upper intake manifold assembly. Please see .
  4. Disconnect the vacuum line from the pressure regulator.
  5. Remove the regulator retaining screw and remove the retainer bracket. Using a clean shop cloth to catch fuel spillage, carefully pull the regulator from the fuel rail. Twist the regulator slightly while removing to ease removal. Discard the O-ring.

4ecb713.jpg

Fig. Exploded view of the fuel pressure regulator mounting-3.1L and 3.4L (VIN E) engines
To install:
  1. Clean all parts well. DO NOT use shop compressed air to test or clean a fuel pressure regulator. Clean the fuel pressure regulator screen, if necessary. DO NOT immerse the fuel pressure regulator in a solvent bath or it will be damaged.
  2. If the filter screen has been contaminated, it should be removed and the pressure regulator replaced.
  3. Lubricate a new pressure regulator O-ring with clean engine oil and install on the regulator inlet.
  4. Install the fuel return pipe to the regulator.
  5. Install a new retainer and spacer bracket into the slot on the fuel rail and install the pressure regulator to the fuel rail. Tighten the fuel return line nut to 13 ft. lbs. (17 Nm).
  6. Connect the vacuum line to the pressure regulator and install the retainer screw. Tighten to 76 inch lbs. (8.5 Nm).
  7. Inspect and verify that the retainer and spacer bracket is engaged in the slots in the fuel rail. Grasp and pull on the regulator to ensure that it is properly seated.
  8. Install the upper intake manifold. Please see .
  9. Connect the negative battery cable.
  10. Inspect for leaks using the following procedure:
    • Turn the ignition switch to the ON position for 2 seconds.
    • Turn the ignition switch to the OFF position for 10 seconds.
    • Turn the ignition switch to the ON position again.
    • Inspect all areas for fuel leaks.

Other size engine can find in autozone.com (free register).

Hope this help (remember rated this).

Feb 08, 2010 | 1997 Pontiac Grand Prix

2 Answers

Need to replace fuel regulator on 96 chevy c1500


the regulator is part of the injector block. You will need to pull the upper plenume to gain acess to it.

Oct 11, 2009 | 1996 Chevrolet C1500

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Replacing rear passenger window


I ended up removing the regulator, replacing the window in its track and ordering a replacement regulator.
the information provided by FixYa was helpful in getting the window back in place but the main issue was 'restringing the cables' on the regulator - apparently difficult if not impossible to do, therefore the necessity to order the new part.

Mar 21, 2009 | 2004 Pontiac Grand Prix

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92 S-10 4.3 ltr seems to be flooding


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DORMAN regulator Part # 55162 about $40
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