Mechanics

FORD RANGER ENGINE PROBLEM

1999 Ford Ranger • 10,000 miles

Codes of PO171 and PO174 which says System adaptive fuel to lean on Bank1 and Bank2. What does this mean and how do I fix it?
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Christinepotter
February 24, 2013.




It means the engine is running lean or thinks its running lean.I would first check the actual fuel pressure?Then look for vacuum leaks.

Saturntech9
Feb 24, 2013.
Thank you so much. I will try that.
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Tiny
Christinepotter
Feb 25, 2013.
Your welcome.

Saturntech9
Feb 26, 2013.

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