1997 - 2003 Ford F150 General discussion on the Ford 1997 - 2003 F150 truck.

Engine running lean codes 171 174

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Jun 10, 2017 | 09:28 AM

JoshAvery

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Engine running lean codes 171 174

Replaced the PCV and MAF sensor, check engine light is still on. My truck is running clean and the idle is good. All my hoses look good. What do I do next?

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