2011 Ford Focus 2.0: P0171 that is worse at idle
The car almost stalls while waiting at lights. 2011 Ford Focus 2.0, about 189,300 miles. I can leave the vehicle overnight if the test needs it. What would jus…
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Ford Focus 2.0
Focus lean-code diagnosis proposed with flammable spray — P0171
A friend suggested a driveway method that I am not comfortable attempting. Background: The car almost stalls while waiting at lights. Stored code: P0171. 2011…