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1999 Jeep Grand Cherokee Laredo 4.0L Misfire, MIL Lamp on
This Jeep has driven another shop nuts and now it`s my turn. I checked compression, tried a third set of plugs, swapped out the crank sensor and upstream o2`s to no avail. Pulled fuel rail and all injectors spray a good pattern. You start this up and 30 second...
Summary posted 5/2/2013
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24 Replies Received
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Related Documents & Media | VIN | 1J4GW58S1X |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Misfire, MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0300 | Multiple Misfire Detected |
| P0301 | Cylinder 1 Misfire Detected |
| P0306 | Cylinder 6 Misfire Detected |
Message Closed w/Summary
Vehicle Data
1999 Jeep Grand Cherokee Laredo
| VIN | 1J4GW58S1X |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Misfire, MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0300 | Multiple Misfire Detected |
| P0301 | Cylinder 1 Misfire Detected |
| P0306 | Cylinder 6 Misfire Detected |
Video