Question about 1998 Oldsmobile Cutlass

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Where is my fuel pressure regulator at?

Im trying to find out where the fuel pressure regulator is in my 98 olds cutlass. replaced the fuel pump, bled the gas line and car wont stay running. my neighbor thinks it might have something to do with a defective antitheft system. help!

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Its located on the fuel rail assembly, under the hood near the throttle body.

Posted on Jun 21, 2009


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I have only 35 to 39 psi gas pressure reading what can cause this. I have replaced the filter plug wires coil packs. when stepping on gas pedal there is alot of hessation

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Has to be fuel related
Are you sure the fuel pump is working properly? Do you have a pinched or plugged fuel line>
Disconnect the fuel line off the carburetor and have some one hit the starter. If gas comes out you know it has to do with the carb. itself.

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Fuel pressure regulator

You can't,you will have to replace fuel pressure regulator or fuel pump,also replace fuel filter,remember to relieve fuel pressure first.

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diesel engines high pressure pumps not suppose run dry.diesel fuel keep high pressure pump cool and lubricated.problem could be fuel pressure regulator in the fuel filter water separator housing.replace fuel filter see if it helps problem could be fuel pressure regulator in fuel filter housing, the fuel pressure regulator has a air bleed orifice that allows vent to the fuel tank.make sure fuel pump fuse okay pump getting power. i would let garage or dealership check it out if all fails because your diesel engine fuel timing is pcm controlled if let fuel system go dry you probably have to have fuel injection timing reset or could have damage high pressure pump letting it run dry i hope thats not the case because high pressure pump not cheap part i hope it not that.

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I have attached a general video link demonstrating the method of changing the "Fuel Pressure Regulator".please download or watch the video to know how to locate the regulator and how to replace it.Hope your problem is solved.Please rate my solution as helpful.Have a great day.

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Very easy if you have the new one just look at how it is mounted, most times just a couple of retainning screws and it comes right out, bleed the fuel system of pressure before you take it out or put a rag over it, there will be about 40 PSI in the fuel rail.

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1991 Olds cutlass Cala 4cyl 151 5 speed

sounds sort of like a map sensor or the heating and cooling sensor. Both help regulate the fuel. also need to check to see if the thermastat is stuck to open. If the hot and cold sensor is giving a false reading of hot to the computer this can cause the car not to pump fuel. If the sensor is bad also replace the therm as well.

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