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P0171/P0174 Lean codes
Have this Isuzu NPR Tilt cab with 6.0L Chevy gas motor w/Allison trans setting lean codes have checked everything smoked intake three times smoke checked air cleaner hoses evap system as well still sets codes. Replaced vent solenoid it was full of dirt (FULL) ... Login to read more. ![]()
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| Engine | 5.2 L |
Vehicle Data
2012 Isuzu NPR-HD 5.2L
| Engine | 5.2 L |

6 Replies Received
6 Replies Received