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P0171 PO174 Ford - 1996 Crown Victoria

1996 Ford Crown Victoria codes PO171 PO174. What is the most common cause to get these codes

Vehicle: 1996, Ford, Crown Victoria LX, 4.6L
asked Feb 27, 2015 by anonymous

1 Answer

P0171 Fuel system lean Bank 1

P0174 Fuel system lean Bank 2

Vacuum leaks are the main causes for lean condition, Here is a 4.6 Ford with its vacuum hose that have deteriated causing a lean condition, when a lean condition occurs it upset the fuel ratio where there is more air than fuel .

answered Feb 27, 2015 by Reynaldo (10,835 points)

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