Bought the truck in 08/12. Love this truck. To make this short I have replaced; Fuel Pump, FPDM, Plugs and COP's, Fuel rail Pressure Sensor, followed the power wire from the FDPM and found it corroded bad so I replaced it, also changed the ground location on the FDPM, I have checked all the wires from the FDPM to the drivers seat, checked all fuses.


Before I replaced the plugs and COP's it would take awhile to start and had no power, I couldn't even pass someone. After replacing she would start right up and I had a lot more power back but still when I would pass someone I could feel it jerking, not bad but noticeable, just not smooth like it should be.
So the other day I go to start it and let go of the key before she actually fired, heard a air sound from the engine like air brakes letting go. then she took forever to start. Now she takes about 10-15 sec to start and will run rough for the first 10-20 seconds of starting then runs fine. I get down the road 200 ft and she sputters for 10-15 sec then runs fine. I have noticed when the fuel tank is under 1/4 and I take off quick of turn quick she cuts out for 2-3 secs then comes back. Check engine light keeps coming on saying Fuel Rail Pressure Sensor but I have already replaced that. Besided that she runs fine with the exception of the sputter when I pass someone.
I am led to believe that a wire is shorting out somewhere or my PCM is bad.
I'm just reaching out here any help is appreciated.

 

Sigh...

What year? What specific fault code(s)?

 

2005. Fuel Rail Pressure Sensor. that has been replaced to no avail.

 

What is the SPECIFIC DTC? (Pxxxx) where xxxx= a 4 digit number.

Fault codes are NOT a diagnosis that a specific part is faulty, they are a data point on the path to an accurate diagnosis.

Unlikely on both counts.

 

P0190, P0191 and P0305

 

Some days its easier pulling teeth via the internet than getting details or specific info trying to help others................

 

Have you done any of the diagnostics in the PCED for the FRP faults?

Did you reset the PCM's KAM after replacing coils and plugs?

 

No I am not sure what else I can or should or how to check anything. I have a fuel pressure tester but I really don't want to cut into the rubber hose before the fuel filter.


Yes I cleared the KAM.

 

Still getting P0191 Fuel Rail Pressure Sensor Circuit Range/Performance.
I have power to the FPDM but the scanner I have shows no fuel rail pressure.
So now I can't even get it to start. I pulled the fuel line off of the filter and turned the key on and a little bit of gas came out maybe half a cup.

 

have you changed the filter? my 06 ran terribly when the filter was clogged.
just a cheap idea