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1999 Chevrolet K1500 Suburban 5.7L MIL Lamp on
light on p0171, p0174 adding 25 % both banks at idle. adding 18% both banks at cruise. 60 psi fuel pressure. new mass air flow. smoke test found no vac leaks. if i add carb cleanner o2s respond and fuel trims drop. cleaned fuel injectors with top engine cleane...
FIX posted 5/9/2017
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Message Closed w/FIX
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18 Replies Received
18 Replies Received
Related Documents & Media | VIN | 3GNFK16R2X |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection / cpfi |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Cruise, Idle |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
| P0174 | Fuel System Too Lean (Bank 2) |
Message Closed w/FIX
Vehicle Data
1999 Chevrolet K1500 Suburban
| VIN | 3GNFK16R2X |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection / cpfi |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Cruise, Idle |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
| P0174 | Fuel System Too Lean (Bank 2) |
Video