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2000 GMC C-Series Topkick C6H042 7.4L Poor Idle Quality, Surge, vibration
engine vibrates at all rpm's , i have checked the following , fuel preasure ( good 48 psi running ) e-85 contamination ( pass 10% ) compression ( 150 - 170 psi ) spark ( all coils fire ) plugs ( no cracks , proper gap , none fouled) checked all fuses . i am ou...
Summary posted 9/18/2009
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| VIN | 1GDE6H1B5Y |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 0-speed Automatic |
| Delivery | FI / sfi |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Surge, Vibration |
| Occurs | Always |
| Misc. | Coil on Plug Ignition System |
Message Closed w/Summary
Vehicle Data
2000 GMC C-Series Topkick C6H042
| VIN | 1GDE6H1B5Y |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 0-speed Automatic |
| Delivery | FI / sfi |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Surge, Vibration |
| Occurs | Always |
| Misc. | Coil on Plug Ignition System |
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