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2001 GMC Safari SLE 4.3L Poor Idle Quality, Misfire, MIL Lamp on
Vehicle idles rough all the time, hot or cold. Runs perfect off idle with no misfires. Towes a trailer no problem with plenty of power. Cyl number 5 and 6 racking up misfires constantly at idle. Smoke tested intake with no external leaks found.
FIX posted 5/24/2011
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Message Closed w/FIX
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15 Replies Received
15 Replies Received
Related Documents & Media | VIN | 1GTDM19W61 |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Misfire, MIL Lamp On |
| Occurs | Idle |
Trouble Codes
| P0155 | Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Circuit Malfunction |
| P0300 | Multiple Misfire Detected |
| P0452 | Fuel Tank Pressure Sensor Circuit Low Voltage |
Message Closed w/FIX
Vehicle Data
2001 GMC Safari SLE
| VIN | 1GTDM19W61 |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Misfire, MIL Lamp On |
| Occurs | Idle |
Trouble Codes
| P0155 | Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Circuit Malfunction |
| P0300 | Multiple Misfire Detected |
| P0452 | Fuel Tank Pressure Sensor Circuit Low Voltage |
Video