Question about 1993 Oldsmobile Cutlass Supreme

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Fuel pressure regulator

How do I get at the fuel regulator on my 93 olds cutlass? I tloooks like it is under the throttle body intake, Any diagrams available?

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  • Bruce Mazurowski
    Bruce Mazurowski Jul 29, 2008

    this was exactly what I found as I went forward and replaced the pressure regulator

  • PATTSPAZ Jan 23, 2009

    1992 CUTLASS SUPREME...FUEL POURS ONTO MANIFOLD, WAS STALLING AND CHUGGING AT TAKEOFF. NOW DOESN'T START.

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1 Answer

Unfotunately all of the throttle body and sometimes the intake has to be removed to do this, what is really great (just kidding) is you also have to remove these things to replace a $2.98 PCV valve, because the fitting for the top of the valve butts up against the top of the intake, so BE SURE to do that at the same time, just a tip..
PHIL

Posted on Jul 22, 2008

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Fig. Fig. 1: TBI fuel pressure regulator

  1. Remove the throttle body assembly from the vehicle as outlined in this section.

WARNING To prevent spring pressure release, hold the regulator housing against the throttle body while removing the mounting screws.
  1. Remove the three retaining screws that hold the pressure regulator to the fuel body.
  2. Disassemble the pressure regulator assembly. Note the location of the components for reassembly. Discard the gasket.
To install:
  1. Install a new gasket and the regulator assembly. Tighten the three retaining screws.
  2. Install the throttle body assembly as outlined in this section.
WARNING The pressure regulator diaphragm MUST be installed with the vent hole aligned with the vent holes in the throttle body and regulator housing!

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TPS throttle positioning sensor......Located on the throttle body and looks like this pic attached Top pic is TPS and Other is the regulator



Fuel pressure reg 4.3L Engines
  1. Properly relieve the fuel system pressure.
  2. Disconnect the negative battery cable.
  3. Remove the upper intake manifold.
  4. Remove the fuel pressure regulator retainer clip.
  5. Twist and pull the fuel pressure regulator in order to remove the regulator from the housing using a shop towel to catch any spilled fuel.
  6. Remove and discard the regulator seal O-ring.
  7. Remove and discard the regulator filter.
  8. Remove and discard the regulator seal O-ring.
  9. Remove and discard the backup ring.
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