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running lean.. rough idle


New Shoes......
OK,, the truck,, 5.4 F250 superduty,, is now running a little rough.. the codes I pulled are P1132,P1151, P0171, P0174 I have replaced several coils as have had issues with some misfires.. any other ideas?


Redneck Prognosticator
Belton, MO
Fuel filter? It might be holding back enough fuel pressure to make it run lean.



New Shoes......
Those codes are normally a vacuum leak. Have you checked all the vacuum lines etc

rubber elbow on the PCV valve was the problem.. was looking at a replacement at advanced auto,, and the guy there,,, ( retired mechanic) gave me a old spark plug boot.. much better and will last longer and FREE ! truck is working again !

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