P0191 - All Suggestions Exhausted - F150online Forums



P0191 - All Suggestions Exhausted

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  #1  
Old 01-13-2010, 02:00 PM
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P0191 - All Suggestions Exhausted

Hi there,

got an 04 f150 fx4 5.4 3valve,

Throwing code p0191, been on the website last few days reading all the issues with it,

have replaced the fuel rail pressure sensor

have replaced the fuel pump driver modual behind the spare tire,

Fuel filter replaced with in 3000miles.

Problem still occurs, the EDGE program reads 40psi at idle, on the FRP but when in demand fuel pressure drops to 11 - 8 psi and engine acts as if it were stuck on a rev limiter.

Is there any last options to try before the trip to the stealership??

Thanks in advance

Jeff Stewart
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  #2  
Old 01-13-2010, 02:54 PM
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Fuel injector clearner was done at the 3000mile fuel filter change.
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  #3  
Old 01-13-2010, 04:01 PM
glc
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Maybe a clogged sock filter on the fuel pump inside the tank?
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  #4  
Old 01-15-2010, 11:48 PM
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i bet its a fuel pump going bad on ya
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  #5  
Old 01-15-2010, 11:53 PM
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Run stock tune. Still there? Run stock tune, factory intake.

List all mods.
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  #6  
Old 03-22-2011, 07:06 PM
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hello dear
how your problem was fixed i am in same boat i replaced fuel driver module all injectors fuel pump is arround six months old problem was fixed when i changed pump last time but again it started


Quote:
Originally Posted by arised View Post
Hi there,

got an 04 f150 fx4 5.4 3valve,

Throwing code p0191, been on the website last few days reading all the issues with it,

have replaced the fuel rail pressure sensor

have replaced the fuel pump driver modual behind the spare tire,

Fuel filter replaced with in 3000miles.

Problem still occurs, the EDGE program reads 40psi at idle, on the FRP but when in demand fuel pressure drops to 11 - 8 psi and engine acts as if it were stuck on a rev limiter.

Is there any last options to try before the trip to the stealership??

Thanks in advance

Jeff Stewart
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