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International Automotive Technicians Network
P0171 P0174
Posted to Technical Discussion Forum on 8/21/2026 10 Replies

Hello IATN

This one is kicking my tail. After 40 plus years still time to learn something new. This ford has 270000 miles the clock. Pass smoke test several time. No leak at the rear pcv hose , booster pinched off pcv and other vacuum lines also. MAF baro a... Login to read more.

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car Vehicle Data

2002 Ford F-150 King Ranch 5.4L

VIN 1FTRW07L92
Engine5.4 L
Trans4-speed Automatic (Electronic)

car Vehicle Data

2002 Ford F-150 King Ranch 5.4L

VIN 1FTRW07L92
Engine5.4 L
Trans4-speed Automatic (Electronic)