fuel rail pressure sensor

[BALLZ_80]

I have a po190 engine code. It says fuel rail pressure sensor but i have ruled out the pressure sensor it self and i dont see any signs of leaks. At about half throttle you can feel the engine shutter once or twice like it needs more fuel. Also it is a trilogy marauder and does have the kenne bell boost o pump. Can anyone give me some pointers. Thanks

[martyo]

How did you rule out the FRPS?

[N40GL]

I just replaced mine after it threw P0190's on the way to and from MVX. According to the Ford store, these are a known weak point in Ford engines, so I replaced it.

[babbage]

I have a po190 engine code. It says fuel rail pressure sensor but i have ruled out the pressure sensor it self and i dont see any signs of leaks. At about half throttle you can feel the engine shutter once or twice like it needs more fuel. Also it is a trilogy marauder and does have the kenne bell boost o pump. Can anyone give me some pointers. Thanks

Ever change the fuel filter?

[LANDY]

I bet your dropping fuel pressure. What fuel pump is in car? Dattalog it and it will point out your problem.

[TFB]

I had the P0190 when one of the pumps managed to disconnect itself(both of mine are in the tank)... My guess is one of your Pumps are weak or has a electrical issues, could also be the fuel line from in tank pump to hat has a leak......

[BALLZ_80]

i will check fuel filter next since it is cheap and i changed the frps already. its easy fixing broken stuff but hard to fix when you dont know whats broke.

[vegasmarauder]

The test for a defective FRPS is to install a test mechanical pressure gauge on the fuel rail. See what it reads vs what the FRPS says. If they are off, bad FRPS. If pressure is the same, pump/filter issues....

[J.bo]

I datalogged 60psi at idle after driving awhile, but when I turn the car off and came back it was the regular 40psi. Does that mean my fps is going bad?

[Blackmobile]

+2 on the fuel Filter

[tbone]

I threw that code back in July. Replaced the FPS, and no more codes. BTW, Sea Foam in your tank is a good thing....fixed my crappy idle at cold start, and the car runs like a beast. Everyone I talk to in the store swears by Sea Foam....
And Pro-Long seems to quiet it down as well...

[guspech750]

On my Eaton swap. My car was idling at 60psi and while driving it was all over.

I checked and rechecked everything fuel related and air related. Finally replaced my FPRS and all was back to normal.


Sent from my iPhone 4S

DTR + 4.10's + Eaton swap = Wreeeeeeeeeeeeeeedom

[Mike M]

Known issue, have it adjusted in the tune, assuming fuel pressure is good.

[tbone]

On my Eaton swap. My car was idling at 60psi and while driving it was all over.

I checked and rechecked everything fuel related and air related. Finally replaced my FPRS and all was back to normal.


Sent from my iPhone 4S

DTR + 4.10's + Eaton swap = Wreeeeeeeeeeeeeeedom

Hey Joe!:bandit:

[Mike M]

http://www.mercurymarauder.net/forums/showthread.php?t=49174&highlight=p0190