Rich code P0175

Tiny
TOM OLDS
  • MEMBER
  • 2002 FORD RANGER
  • 99,000 MILES
2002 ford ranger 3.0l v-6 4x4 with rich code p0175.I have replaced 02sensors, maf sensor. Fuel [pressure at rail is 70 psi any ideas?
Tuesday, April 24th, 2012 AT 4:06 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Fuel pressure specs: 60-65 psi both KOER and KOEO

Probable causes of an engine running rich are as follows:

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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Tuesday, April 24th, 2012 AT 5:05 PM

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