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Old 03-17-2010, 09:07 AM   #1
SYZ
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Question Bypassing the fuel rail pressure sensor

I've been having an annoying problem with the fuel pressure sensor that is mounted to the fuel rail on my Duratec. It seems as though they are designed to read vacuum, and use the vacuum signal to provide the required fuel pressure to the rail, but since my car is boosting 18psi now, it tends to throw engine codes when I stomp on it (likely because the ECU thinks its reading some impossible pressure and therefore broken).

Is there a way to bypass this sensor or delete it altogether? How would the fuel system need to be designed in order to do this? I was told to get a new sensor, and that some sensors are more forgiving than others, but this sensor is brand new and it's throwing codes when i boost hard, so I'm reluctant to purchase a new sensor hoping the issue will cure itself..


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Old 03-17-2010, 10:59 AM   #2
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The issue isnt your sensor , what codes are you seing , what is it doing

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Old 03-17-2010, 11:38 AM   #3
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po191 fuel rail pressure range

the car doesn't do anything wrong other than throw this code on occasion.
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Old 03-17-2010, 12:00 PM   #4
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P0??? codes are generic and can be caused by many things

FRPS which you say you have changed
to high or low of fuel psi
wiring or voltage isues

I would need to see a datalog to help any further

Tom
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