GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 2001 🢒 Aurora 🢒 Engine 🢒 Engine Controls - 3.5L 🢒 Fuel Pressure Regulator Replacement

Removal Procedure

    Object Number: 290390 Size: SH
  1. Relieve the fuel pressure. Refer to Fuel Pressure Relief .
  2. Clean any dirt from the fuel pressure regulator.
  3. Disconnect the fuel pressure regulator vacuum line.
  4. Remove the fuel pressure regulator retainer clip (1).
  5. Pull and twist the fuel pressure regulator  (6) in order to remove the regulator from the fuel rail. Use a shop towel to catch any spilled fuel.
  6. Remove the regulator lower O-ring (2).
  7. Remove the filter (3).
  8. Remove the regulator upper O-ring (4).
  9. Remove the back-up ring (5).
  10. Cover the fuel pressure regulator housing in order to prevent contaminants from entering the fuel system.

Installation Procedure

    Object Number: 290390 Size: SH

    Notice: 

       • Do not use compressed air in order to test or clean a fuel pressure regulator as damage to the fuel pressure regulator may result.
       • Clean the fuel pressure regulator filter screen with gasoline if necessary.
       • Do not immerse the fuel pressure regulator in a solvent bath in order to prevent damage to the fuel pressure regulator.

  1. Install new O-rings on the fuel pressure regulator if a new regulator is not being installed. Lubricate the O-rings lightly with clean engine oil.
  2. Install the back-up ring (5).
  3. Install the upper O-ring (4).
  4. Install the filter (3).
  5. Install the lower O-ring (2).
  6. Install the fuel pressure regulator (6) into the fuel rail.
  7. Install the fuel pressure regulator retainer clip (1).
  8. Connect the fuel pressure regulator vacuum line.
  9. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  10. Inspect for fuel leaks.
    11. 10.1. Turn ON the ignition for 2 seconds.
    10.2. Turn OFF the ignition for 10 seconds.
    10.3. Turn ON the ignition.
    10.4. Inspect for fuel leaks.
  11. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical-3.5 L.