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P0171&174
Posted to Technical Discussion Forum on 8/19/2026

On this car we had lean LT fuel trim both banks +25%. Initially we searched for air leaks first by isolating the crank case (close off purge and vacuum sources) and observe ST fuel trim @ idle. No change. Then introducing propane (with a small hose) at any loc... Login to read more.

 

car Vehicle Data

2006 Jaguar XKR Victory Edition 4.2L

VIN SAJDA42B76
Engine4.2 L
Trans6-speed Automatic (Electronic)

car Vehicle Data

2006 Jaguar XKR Victory Edition 4.2L

VIN SAJDA42B76
Engine4.2 L
Trans6-speed Automatic (Electronic)