P0191
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P0191
Hi I have been trying to figure out the p0191fuel rail pressure sensor code on my 2005 f-250 5.4l. I have changed the sensor and fuel filter. Today I got a scan tool that reads the pressure and at a idle the pressure is about 39psi. I took it for a drive with my snowplow attached and the pressure would drop to about 30 psi then I went up a hill and it dropped to 18psi and went as low as 3psi. The truck only does this sometimes. Can anybody help me out with this problem I would really appreciate it. I'm hoping it's not the fuel pump
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Thank you for the reply JWA. I was not wanting to hear that tho. I was always told that when a fuel pump goes it goes I guess that isn't true. When I changed the fuel filter it was pretty dirty and clogged is there a chance it could be the screen on the pump plugged? Although if I'm gonna take it out to check I suppose I might as well change the pump. Was just hoping not to have to spend another $300.
Fleet Owner
Joined: Aug 2010
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From: Reynoldsburg, Ohio
Your issues could very well be the in-tank filter or sock being clogged. I completely understand not wanting to spend more money but honestly once the tank is down and sitting on the ground its a good time to refresh the pump, maybe have the tank cleaned professionally too.
I offer this only because the restricted flow might have weakened or over stressed the pump just enough to have it fail sometime soon. I hate doing the same job a second time if just a few dollars could have prevented it.
Then again if your climate is fair enough (-8 here today.
) or time isn't a concern the simple cleaning of the pump intake and tank might be enough too.
I offer this only because the restricted flow might have weakened or over stressed the pump just enough to have it fail sometime soon. I hate doing the same job a second time if just a few dollars could have prevented it.
Then again if your climate is fair enough (-8 here today.
) or time isn't a concern the simple cleaning of the pump intake and tank might be enough too.
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