fuel rail pressure sensor

BALLZ_80

BALLZ_80

Member
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
 
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.
 
BALLZ_80 said:
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
Click to expand...

Ever change the fuel filter?
 
I bet your dropping fuel pressure. What fuel pump is in car? Dattalog it and it will point out your problem.
 
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......
 
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.
 
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....
 
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?
 
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...
 
Last edited:
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
 
guspech750 said:
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
Click to expand...

Hey Joe!:bandit:
 
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