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1999 Pontiac Grand Prix SE 3.1L MIL Lamp on
egr ports are restricted,(still has slight flow) i have verified this. can the passage ways on this 3.1 be successfully cleaned by removing the upper intake plenum, or would the lower need to be removed as well. customer recently had this to the dealer and the...
FIX posted 4/13/2006
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Message Closed w/FIX
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Related Documents & Media | VIN | 1G2WJ52M4X |
| Engine | 3.1 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SEFI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0401 | EGR System Insufficient Flow Detected |
Message Closed w/FIX
Vehicle Data
1999 Pontiac Grand Prix SE
| VIN | 1G2WJ52M4X |
| Engine | 3.1 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SEFI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0401 | EGR System Insufficient Flow Detected |
Video