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1988 Chevrolet R30 Silverado 7.4L Excessive Emissions, Hesitation
Vehicle has a stumble on hard accelleration, when this happens we can see black smoke from the tailpipe. TPS checks out ok and we tried a MAP Sensor. Fuel Pressure is good at 11psi. Fuel filter is new. Does not go into closed loop, coolant temp is 136 Degrees....
FIX posted 10/13/2000
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Related Documents & Media 
| VIN | 1GCHR33N6J |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / Trottle Body Injection |
| Emissions | Ca |
| Symptoms | Excessive Emissions, Hesitation |
| Occurs | On Accel |
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Vehicle Data
1988 Chevrolet R30 Silverado
| VIN | 1GCHR33N6J |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / Trottle Body Injection |
| Emissions | Ca |
| Symptoms | Excessive Emissions, Hesitation |
| Occurs | On Accel |
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