2004 F150 with codes: P0171, P0174, P0191, P0301
03-06-2009, 05:17 PM
#1
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Location: Fort Hood, Texas
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2004 F150 with codes: P0171, P0174, P0191, P0301
I recently was driving from San Angelo, Texas to Fort Hood, Texas... about a 158mile drive. While driving, my 2004 F150 FX4 started to sputter and felt as if it wanted to shut off and the Emission System Light stays on. The slower i went the less that it would sputter if any. It usually started if I went up to 70mph. Occasionally it does it at lower mph. I took it to my local auto parts store and got a diagnostic. The codes came out as P0171, P0174, P0191, P0301.
Has anyone ever had this problem before or something very similar to this???
And if so what was done to correct it?
Any help would be greatly appreciated.
Thank you,
-Josh
Has anyone ever had this problem before or something very similar to this???
And if so what was done to correct it?
Any help would be greatly appreciated.
Thank you,
-Josh
03-07-2009, 10:31 PM
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Lean bank one/two could be the o2 sensor
FPRS or fuel pressure regulator could be bad
COP on cylinder one could be bad causing all the problems.
I would suggest changing that COP on cylinder one to another cylinder, reset the battery and then drive it. If you get codes go and have them pulled and if it changes to the other cylinder that you put the first COP on then you have a bad COP and change it and see if all your problems go away.
FPRS or fuel pressure regulator could be bad
COP on cylinder one could be bad causing all the problems.
I would suggest changing that COP on cylinder one to another cylinder, reset the battery and then drive it. If you get codes go and have them pulled and if it changes to the other cylinder that you put the first COP on then you have a bad COP and change it and see if all your problems go away.