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2005 Cadillac STS 4.6L Poor Idle Quality, Misfire, MIL Lamp on
Random misfires, intermittently, when is misfiring B1 avg injector pulse is 3.5ms and B2 avg injector pulse is 7.3ms. Lambda values per bank are 1.250 and 0.950 not certain which value is for which bank. When problem is gone all values are close to each other ...
FIX posted 8/11/2015
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Message Closed w/FIX
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9 Replies Received
9 Replies Received
Related Documents & Media | VIN | 1G6DC67A85 |
| Engine | 4.6 L / 8 cyl / GAS |
| Trans | 5-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Misfire, MIL Lamp On |
| Occurs | Intermittently |
Trouble Codes
| P0300 | Multiple Misfire Detected |
| P0305 | Cylinder 5 Misfire Detected |
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
| P0521 | Engine Oil Pressure Sensor Performance |
Message Closed w/FIX
Vehicle Data
2005 Cadillac STS
| VIN | 1G6DC67A85 |
| Engine | 4.6 L / 8 cyl / GAS |
| Trans | 5-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Misfire, MIL Lamp On |
| Occurs | Intermittently |
Trouble Codes
| P0300 | Multiple Misfire Detected |
| P0305 | Cylinder 5 Misfire Detected |
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
| P0521 | Engine Oil Pressure Sensor Performance |
Video