FUEL PRESSURE REGULATOR

Tiny
GLENNERA
  • MEMBER
  • 2005 FORD EXPLORER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 65,000 MILES
Where is the fuel pressure regulator located and how to replace it? This is the code being thrown up for us. Thank you.
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Saturday, July 10th, 2010 AT 3:14 PM

27 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Hello,

The fuel pressure regulator is located on the fuel rail. Here is a diagram (below) of what it looks like and a guide to help you test it.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Saturday, July 10th, 2010 AT 6:56 PM
Tiny
DOGHANDLER01
  • MEMBER
  • 2003 FORD EXPLORER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 86,000 MILES
The diagnostic computer reads fuel too lean. The fuel pressure is 70. It should between 28 and 40. Where can I find a diagram that shows me where the fuel pressure regulator is, or can you tell me?
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Wednesday, January 2nd, 2019 AT 7:06 PM (Merged)
Tiny
RASMATAZ
  • MEMBER
The fuel pressure should be between 60 and 65 so you are okay. The regulator is will the pump as one unit they do not have separated pressure regulators anymore. It is calling a lean codes and low power because you need a new MAF sensor which is a regular maintenance item.

Here is a guide to help you get the problem fixed.

https://www.2carpros.com/articles/how-to-replace-a-mass-air-flow-sensor-maf

Please let us know what happens.

Cheers

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Wednesday, January 2nd, 2019 AT 7:06 PM (Merged)
Tiny
SUE GUMINA
  • MEMBER
Yep worked perfect for me this site rocks.
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Wednesday, January 2nd, 2019 AT 7:06 PM (Merged)
Tiny
EDDIE CANDELARIA
  • MEMBER
  • 2003 FORD EXPLORER
  • 120,000 MILES
Car overheated wont start now turns over sounds funny but smells like gas bad fuel pump working
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Wednesday, January 2nd, 2019 AT 7:06 PM (Merged)
Tiny
RASMATAZ
  • MEMBER
FPR is on the fuel rail and the FP is in the fuel tank
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Wednesday, January 2nd, 2019 AT 7:06 PM (Merged)
Tiny
2CARPROS-ARCHIVES
  • MEMBER
  • 2004 FORD EXPLORER
  • 108,000 MILES
2004 Explorer XLT 4.0L 6-cyl gasoline; gas mileage way down to about 12-13 mpg, running very rich, had diagnosis performed, was told the "fuel pressure regulator" located at the front of the fuel rail is stuck open or not functioning. Told about $350 for part, but cannot locate equivalent part on any auto parts sites. Is the name correct, or is the device known as something else?
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Wednesday, January 2nd, 2019 AT 7:06 PM (Merged)
Tiny
JDL
  • EXPERT
How long since a tune-up? Any applicable trouble codes? Use a gage and check fuel pressure. My info says fuel pump regulator is in gas tank, part of the fuel pump assembly.
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Wednesday, January 2nd, 2019 AT 7:06 PM (Merged)
Tiny
RLOTHIAN
  • MEMBER
Trouble code read "high fuel pressure", "running rich bank 1 and 2", don't remember the code. Took the vehicle to mechanic who diagnosed fuel system condition, checked fuel pump pressure (5 psi too low), checked rail pressure (10 psi too high), took vacuum line off the "fuel pressure regulator" at front of rail, pressure is meant to drop by about 10 psi, did not change without vacuum, which lead to diagnosis of faulty fuel pressure regulator. He also recommended replacing fuel pump and fuel filter. Total cost of $900 with labor. No tune-up ever, all original engine equipment including fuel and ignition systems components. I did replace the MAF sensor recently when vehicle began rough-idling and stalling.
My question is what is the component called that bolts on (two torx bolts) to front of the fuel rail, and has a small-diameter vacuum line coming of the top of it? I can't find it in any of the online parts stores, but do remember the mechanic telling me that it is a motorcraft part only. Thanks for your help.
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Wednesday, January 2nd, 2019 AT 7:06 PM (Merged)
Tiny
JDL
  • EXPERT
If it looks like the picture, it is a fuel pressure sensor. The picture came from rockauto. Com
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Wednesday, January 2nd, 2019 AT 7:06 PM (Merged)
Tiny
RLOTHIAN
  • MEMBER
Thanks, I found it, it is the Fuel Injection Pressure Damper, Ford PN 9F775. Rock Auto has it for $166, Ford for $380.
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Wednesday, January 2nd, 2019 AT 7:06 PM (Merged)
Tiny
JDL
  • EXPERT
I hope you get it going your way.
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Wednesday, January 2nd, 2019 AT 7:06 PM (Merged)
Tiny
RMOORE09
  • MEMBER
  • 1999 FORD EXPLORER
  • 212,000 MILES
Hello, where is the Fuel Pressure Regulator on my model explorer? It has the 4.0 L V6 OHV engine. I was told it was on the fuel pump assembly but I have been told other things. Could someone tell me for sure?
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Wednesday, January 2nd, 2019 AT 7:06 PM (Merged)
Tiny
ASEMASTER6371
  • EXPERT
On the fuel rail.

Why are you replacing it? Not a very common issue at all.

Roy
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Wednesday, January 2nd, 2019 AT 7:06 PM (Merged)
Tiny
RMOORE09
  • MEMBER
The regulator actually is not working properly. It starts but it is a little rough on cold starts. The cranking amps of the battery is great.
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Wednesday, January 2nd, 2019 AT 7:06 PM (Merged)
Tiny
ASEMASTER6371
  • EXPERT
How did you determine the regulator is bad? What is the pressure key on engine off?

Roy
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Wednesday, January 2nd, 2019 AT 7:06 PM (Merged)
Tiny
RMOORE09
  • MEMBER
When the engine is off there is no pressure.
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Wednesday, January 2nd, 2019 AT 7:06 PM (Merged)
Tiny
ASEMASTER6371
  • EXPERT
That is most likely the pump. There is a check valve in the pump that is common for failure. Did you pinch off the lines to confirm?

Roy
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Wednesday, January 2nd, 2019 AT 7:06 PM (Merged)
Tiny
ENOCHAHORNE
  • MEMBER
  • 1998 FORD EXPLORER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 162,000 MILES
Ok the truck ran fine and then a hour later would not start. Replaced the fuel pump, still dont think im getting proper fuel pressure. Checked the fuel injecter wire harness for power didnt use a noid light. Used a volt meter and when turning the vehicle over showed 12 volts. So sure thats ok. But I am getting some fuel pressure out of the port. But not the 30 to 45 psi. So my question is the injectors haft to have a least 30 psi to operate, or fuel to pass through the injectors. Also where is the fuel pressure regulator located at on this vehicle?And the truck only turns over. Can spray starting fluid in intake and it will fire.
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Wednesday, January 2nd, 2019 AT 7:06 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
The regulator is on the fuel rail. Check to see how much pressure you are getting and let me know. If you need directions, let me know.
Joe
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Wednesday, January 2nd, 2019 AT 7:06 PM (Merged)

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