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1988 GMC C1500 Sierra SLE 5.7L Excessive Emissions, Poor Idle Quality, Hesitation, Poor Fuel Economy
This pick up truck came directly from another [...] had also tried "everything".Symptoms are black fumes, black deposits in spark plugs, high fuel [...] pressure is OK (14 PSI) and the problem remains the same even if reducing the pressure to 12 PSI. MAP senso...
FIX posted 3/14/2002
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Related Documents & Media | VIN | 1GTDC14K0J |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / TBI |
| Emissions | US Fed emissions |
| Symptoms | Excessive Emissions, Poor Idle Quality, Hesitation, Poor Fuel Economy |
| Occurs | Always, Hot, Under Load, Idle |
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Vehicle Data
1988 GMC C1500 Sierra SLE
| VIN | 1GTDC14K0J |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / TBI |
| Emissions | US Fed emissions |
| Symptoms | Excessive Emissions, Poor Idle Quality, Hesitation, Poor Fuel Economy |
| Occurs | Always, Hot, Under Load, Idle |
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