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meagain

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  1. meagain

    EVMV system E450 Super

    Keep getting a P0191 dtc after 100 mi drive or so. Otherwise, engine seems to run fine, no suttering, no hesitancy on start etc. But the fuel rail pressure sensor is expensive . The only thing I can find wrong is that the evmv line from the vapor management valve to the engine looks soft and spongy at the curve in the line.The hose had a tag 9D289-CC, but this hose apparently does not exist at Ford, even though it is printed on a tag that says ford. So I do not know how to replace it. Could this hose collapse? would it cause a P0191? Thanks for any help. 2006 Ford 6.8 V-10 on Class C RV.
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