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

1999 Ford F-150

Tiny

daryl0101

October, 31, 2011 AT 1:39 AM

How can I fix it

FOUND 362 RELATED QUESTIONS

Runs Rich

20 ANSWERS

720 Running Rich

22 ANSWERS
1 IMAGE

1 Answer

Tiny

rasmataz

October, 31, 2011 AT 11:57 AM

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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