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1999 GMC Savana 3500 5.7L Poor Idle Quality, Surge, MIL Lamp on, Lean
This truck is adding fuel from idle up into cruise. The lean codes are setting on decel at about 33 mph. I have check fuel pressure under full throttle and it is at 57 psi. The o2's are switching, they are not showing lean. The actual compliant is that it surg...
FIX posted 12/30/2011
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Related Documents & Media | VIN | 1GDJG31R3X |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Surge, MIL Lamp on, Lean |
| Occurs | On Decel, Idle |
| Misc. | Box Van |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
| P0174 | Fuel System Too Lean (Bank 2) |
Message Closed w/Summary
Vehicle Data
1999 GMC Savana 3500
| VIN | 1GDJG31R3X |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Surge, MIL Lamp on, Lean |
| Occurs | On Decel, Idle |
| Misc. | Box Van |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
| P0174 | Fuel System Too Lean (Bank 2) |
Video