1999 FORD F150 CODE 172-175 SYSTEM FUEL TOO RICH IN BANK 1&2

  • Tiny
  • daryl0101
  • 1999 Ford F-150
  • 135,000 miles

How can I fix it

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Monday, October 31st, 2011 AT 1:39 AM

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  • Tiny
  • rasmataz
  • Member

1. Excessive fuel pressure can be cause by restricted fuel return line

2. Defective Oxygen Sensors.

3. Leaking injectors and fuel pressure regulator.

4. Coolant temperature sensor out of calibration.

5. Restricted air intake system.

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Monday, October 31st, 2011 AT 11:57 AM

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