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2003 Mercury Grand Marquis LS 4.6L Misfire
Car came in with a slight jerk or bucking under load. Will also do it in the bay under load. Scanner shows only P0300 as far as codes but Mode-6 shows misfire counts on all but three cylinders! One thing we did discover was however that when you unplug the EGR...
FIX posted 7/4/2006
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Message Closed w/FIX
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Related Documents & Media | VIN | 2MEFM75W13 |
| Engine | 4.6 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / Electronic Returnless System |
| Emissions | OBD-II Compliant |
| Symptoms | Misfire |
| Occurs | Under Load |
| Misc. | Coil Over Plug |
Trouble Codes
| P0300 | Multiple Misfire Detected |
Message Closed w/FIX
Vehicle Data
2003 Mercury Grand Marquis LS
| VIN | 2MEFM75W13 |
| Engine | 4.6 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / Electronic Returnless System |
| Emissions | OBD-II Compliant |
| Symptoms | Misfire |
| Occurs | Under Load |
| Misc. | Coil Over Plug |
Trouble Codes
| P0300 | Multiple Misfire Detected |
Video