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Fuel pressure regulator location on 5.7 v8

Trying to find out where the regulator is for this vehicle and still having trouble

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The fuel regulator is located on the top of the gas tank it is a pain in the neck to get to

Posted on Feb 06, 2009

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00Linc ls v8 location of fuel pressure valve need to .ck fuel pressure


I have no experience of your model but the fuel pressure regulator is generally fitted to the fuel rail or in some cases close to the rail. Later cars tend to have the pressure regulator integrated into the fuel rail.
The valve regulates the fuel working pressure and sends surplus fuel into the fuel return line. This helps to cool the injectors and reduce vapour locks. Mostly the regulator also increases the working pressure during acceleration in order to richen the air/fuel mixture and it does this by monitoring the intake manifold depression via a vacuum line.

Jan 11, 2016 | Cars & Trucks

1 Answer

Was having trouble with my 1998 GMC 1500 5.7 with it dieing would restart and run for a few but got worse dieing and not starting so i took it in for a diagnostic test they said it had low fuel pressu


The fuel pump in the gas tank and the fuel pressure regulator are what controls fuel pressure-the pump builds pressure in the lines and the fuel rail on the engine, and when pressure is correct the pressure regulator keeps it constant by controlling the fuel return line from the fuel rail to the tank.
If your fuel filter is clean and not plugged, it sounds like the pump or the pressure regulator needs to be replaced. Even though the pump is working, it may be weak and failing. Some vehicles have the FPR inside the tank with the pump-You will have to check where yours is located. If it is located on the fuel rail, it can be checked to see if it is working right.
Good luck.

Feb 08, 2013 | 1998 GMC Sierra

1 Answer

1990 buick century limited/ v-6 engine has fuel in the oil. need a fix.


could be a bad fuel pressure regulator. if they do fail, then it may result in low pressure. Mostly, the diaphragm in the fuel pressure regulator develops a leakage and the fuel enters the vacuum hose. This may lead to various kinds of troubles in the engine. Signs of a Bad Fuel Pressure Regulator
  • The vehicle engine runs rough and often stumbles and sputters.
  • The engine will not start after ignition. Usually, this problem is encountered in the morning when you start your vehicle. Many times, the engine starts, but stalls shortly after starting.
  • The fuel pump in the vehicle becomes noisy at times.
  • A bad fuel pressure regulator can also result in fouled spark plugs.
  • Last but not the least, the fuel mileage of the engine decreases noticeably. if above signs appear, replace fuel regulator. Check the oil dipstick and see if you smell fuel on it. If you do, it could be a symptom of a bad fuel regulator. The regulator has allowed gasoline to leak into the oil system.


Feb 05, 2012 | Cars & Trucks

1 Answer

Dodge dakota 95 v6 when you step on gas engine fades no power backfires loses power rough idle stalls


I would check to see if the vehicle has any stored codes by putting a scanner to it. A cause of something like this can be catalytic convertor clogging up, mass air flow sensor bad, fuel pump bad, or fuel pressure regulator bad.

You can verify fuel pressure by doing a pressure test. If the pressure is good then the fuel pump is as well. Next crimp the soft part of the return fuel line to the tank. If the pressure rises to somewhere around 90 lbs then the fuel pressure regulator is good as well. Test the mass air flow sensor by unplugging it. If the idol improves then you know it is bad.

Check the level of exhuast coming from the tail pipe. You can compair it to another vehicle with a similar size engine meaning v6 to v6 and v8 to v8. You get the point. Also check to see just how hot the exhuast is coming out. Exhuast gases should be hot but not burning hot. If it is then its a good sign your catalytic convertor is clogging.

Apr 06, 2011 | Dodge Dakota Cars & Trucks

2 Answers

What is trouble code for p o 171???


Basically this means that an oxygen sensor in bank 1 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1. Try cleaning your MAF sensor (Mass Air Flow) and run a good fuel system cleaner through it.

Mar 25, 2011 | 1998 Toyota Corolla

1 Answer

2005 Dodge Dakota V8 4.7L, 4X4, engine light on, code P0452 . Where is the fuel pressure sensor located?


  1. The Fuel Level Sending Unit, or Fuel Level Sensor, is located in your gas tank with the Fuel Pump Module. The fuel gauge sending unit (fuel level sensor) is attached to the side of the fuel pump module. The sending unit consists of a float, an arm, and a variable resistor track (card).
  2. The Fuel Pressure Regulator is located within fuel pump module. The fuel pressure regulator controls fuel system pressure. The PCM cannot detect a clogged fuel pump inlet filter, clogged in-line fuel filter, or a pinched fuel supply or return line. However, these could result in a rich or lean condition causing the PCM to store an oxygen sensor or fuel system diagnostic trouble code.
Both of these sensors are connected with the Fuel Pump Module. Here is a diagram:
pctech1_33.jpg

Mar 10, 2011 | Dodge Dakota Cars & Trucks

1 Answer

My 97 chevy blazer starts fine after sitting overnight. However, each subsequent stop/start after that it gets harder to start. It turns over but won't fire up or stalls briefly after? It has new fuel...


check the fuel pressure. I will put money on a fuel pressure regulator leaking. The regulator is attached to the back of the CPI unit under the intake plenum. Fuel pressure should be 55-60 psi roughly and hold for a couple of hours. If pressure drops the first thing I would look at is the regulator.

You can also try this. Instead of trying to start the vehicle right away. turn the key to the run position, wait 5 seconds, then turn the key off. Repeat this a few times, then start the vehicle. If it starts right up than for sure you have a fuel issue and checking fuel pressure will be the next step.

The fuel pressure port is located on the back of the engine on the drivers side near the distributor.

Jan 19, 2011 | Chevrolet Blazer Cars & Trucks

2 Answers

How do you change a fuel filter


All WJ models have two fuel filters, a strainer filter at the bottom of the fuel pump module inside the fuel tank and one exterior filter within the fuel pressure regulator. Both filters are designed for extended service. They do not require normal scheduled maintenance. Filters should only be replaced if a diagnostic procedure indicates to do so.

The combination fuel filter/pressure regulator is located in front of the fuel tank and above the rear axle. It is transversely mounted to a chassis crossmember (left-to-right). The filter/regulator is equipped with 3 fuel line fittings (2 at one end and 1 at the other end). The single fitting facing the left side of the vehicle is the supply line to the fuel rail. The 2 fittings facing the right side of the vehicle are connected to the fuel tank. Of these 2 fittings, the fitting towards the front is used for fuel return to the fuel tank. The fitting towards the rear is a pressure line.

8bac4de.jpg

Fig.: Fuel filter / regulator location


External filter/regulator removal
WARNING: THE FUEL SYSTEM IS UNDER A CONSTANT PRESSURE (EVEN WITH THE ENGINE OFF). BEFORE SERVICING ANY FUEL SYSTEM HOSES, FITTINGS OR LINES, THE FUEL SYSTEM PRESSURE MUST BE RELEASED.

1. Remove fuel fill cap.
2. Remove fuel pump relay from Power Distribution Center (PDC). For location of relay, refer to label on underside of PDC cover.
3. Start and run engine until it stalls.
4. Attempt restarting engine until it will no longer run.
5. Turn ignition key to OFF position.
6. Disconnect negative battery cable at battery.
7. Raise vehicle.
8. Clean area around 3 filter/regulator fittings.
9. Disconnect fuel supply, fuel return and fuel pressure lines at filter/regulator. Special tools may be required.
10. Remove 2 mounting bolts and remove filter/regulator.



External filter/regulator installation
1. Before installing filter/regulator, be sure all fittings are cleaned of all dirt and contaminants.
2. Be sure o-ring is positioned into fuel return fitting in filter/regulator.
3. Apply a small amount of clean engine oil to o-rings.
4. Position filter/regulator to body and install 2 bolts. Tighten bolts. Refer to Torque Specifications.
5. Connect 3 fittings.
6. Connect negative battery cable to battery.
7. Start engine and check for leaks.


Hope helps (remember rated this).

Jul 05, 2010 | 2003 Jeep Grand Cherokee

4 Answers

Cant find the fuel regulator on my 1996 Dodge Neon


do u mean the fuel pressure regulator? ok this i assume is what you need, the pressure regulator is located on the top of the fuel tank, to access this u remove the the panel covering the cargo area, the panel is on the passenger side, the pressure regulator is directly under that panel, to release the fuel line from the regulator Press the spring tab opposite the fuel line,twist, and pull. below see a picture of the regulator assembly.


c195182.jpg

Jan 26, 2010 | Dodge Neon Cars & Trucks

1 Answer

Low fuel pressure 1996 savana 5.7 V8 central sfi


The only thing left in this system is the fuel pressure regulator. You need to check pressure before the regulator and after the regulator if there is the problem then you need to replace it. I hope this helps. Don't forget to rate my answer.

Feb 18, 2009 | 2001 GMC Savana

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