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1996 GMC C1500 Sierra SL 4.3L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on
Hi Pros! After R&R of intake manifold, this baby idles beautifully, but as soon as I rev the engine for a few seconds, it starts to over-fuel and cough and sputter. Horsepower down 50-60% under load. If I leave it alone for 2-3 minutes, idle smoothes right out...
Summary posted 11/14/2004
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Related Documents & Media | VIN | 2GTEC19W7T |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 5-speed Standard |
| Delivery | FI / TBI |
| Emissions | OBD-II Compliant |
| Symptoms | Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy, MIL Lamp On |
| Occurs | On Accel |
Trouble Codes
| P0300 | Multiple Misfire Detected |
Message Closed w/Summary
Vehicle Data
1996 GMC C1500 Sierra SL
| VIN | 2GTEC19W7T |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 5-speed Standard |
| Delivery | FI / TBI |
| Emissions | OBD-II Compliant |
| Symptoms | Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy, MIL Lamp On |
| Occurs | On Accel |
Trouble Codes
| P0300 | Multiple Misfire Detected |
Video