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2002 Pontiac Grand Prix GTP 3.8L MIL Lamp on
Double check egr tubes both clean into intake manifold, removed throttle plate to check orfice and was clear. Engine stumbles when egr is activated and map volts increase. Tried new egr delco and new map sensor delco / still throws code po401. Pcm calibration ...
Summary posted 3/2/2011
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Related Documents & Media | VIN | 1G2WR52102 |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection / sefi |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always, When Runs Monitor |
| Misc. | Gtp/ Supercharged |
Trouble Codes
| P0401 | EGR System Insufficient Flow Detected |
Message Closed w/Summary
Vehicle Data
2002 Pontiac Grand Prix GTP
| VIN | 1G2WR52102 |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection / sefi |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always, When Runs Monitor |
| Misc. | Gtp/ Supercharged |
Trouble Codes
| P0401 | EGR System Insufficient Flow Detected |
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