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2003 Pontiac Grand Prix GT 3.8L MIL Lamp on
This thing shows misfires on 1+4 around 3,000 RPM, but misfires not felt. Tried a module, swapped coils, and plugs, tried new ignition module, no change. It will flash the SES when driving, in shop shows misfires on scan tool, but no flashing SES. Checked patt...
FIX posted 6/12/2013
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Message Closed w/FIX
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Related Documents & Media | VIN | 1G2WP52K23 |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Cruise |
Trouble Codes
| P0300 | Multiple Misfire Detected |
| P0404 | EGR Control Circuit Range/Performance |
Message Closed w/FIX
Vehicle Data
2003 Pontiac Grand Prix GT
| VIN | 1G2WP52K23 |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Cruise |
Trouble Codes
| P0300 | Multiple Misfire Detected |
| P0404 | EGR Control Circuit Range/Performance |
Video