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2002 Chevrolet Trailblazer LS 4.2L Poor Idle Quality, Misfire
installed new plugs, coil boots and new coil on number 3. still can read missfire counters on scanner on cylinder 3. did find vacuum leak on intake and found it warped. Installed new intake and still have the small miss on 3. When I removed the new plug it loo...
FIX posted 2/21/2012
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Related Documents & Media | VIN | 1GNDT13S72 |
| Engine | 4.2 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection / sefi |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Misfire |
| Occurs | Always, Not as Noticable at High RPM |
Trouble Codes
| P0300 | Multiple Misfire Detected |
| P0303 | Cylinder 3 Misfire Detected |
Message Closed
Vehicle Data
2002 Chevrolet Trailblazer LS
| VIN | 1GNDT13S72 |
| Engine | 4.2 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection / sefi |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Misfire |
| Occurs | Always, Not as Noticable at High RPM |
Trouble Codes
| P0300 | Multiple Misfire Detected |
| P0303 | Cylinder 3 Misfire Detected |
Video