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1995 Buick Riviera 3.8L Poor Idle Quality, Misfire
Vehicle came into the shop running very rough at idle. We hooked up scan tool and found the the stft 182 counts and ltft 149 counts with an o2 sensor reading of 13 MV. Idle smooths when propane is added to air stream and fuel trims come down with o2 reading in...
Summary posted 4/1/2013
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Related Documents & Media | VIN | 1G4GD22K3S |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | Not OBD-II Compliant |
| Symptoms | Poor Idle Quality, Misfire |
| Occurs | Idle |
Trouble Codes
| P0131 | Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage |
| P0171 | Fuel System Too Lean (Bank 1) |
| P0740 | Automatic Transaxle Lockup Clutch System Malfunction |
Message Closed w/Summary
Vehicle Data
1995 Buick Riviera
| VIN | 1G4GD22K3S |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | Not OBD-II Compliant |
| Symptoms | Poor Idle Quality, Misfire |
| Occurs | Idle |
Trouble Codes
| P0131 | Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage |
| P0171 | Fuel System Too Lean (Bank 1) |
| P0740 | Automatic Transaxle Lockup Clutch System Malfunction |
Video