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1990 Chevrolet C1500 454 SS 7.4L Poor Idle Quality, Misfire
Greetings Techs, Big block banshee loading up after over night soak. All ECM data paramaters look good. Also, no EGR opening up cold either. But I can watch the Map voltage stay high until throttle is depressed and after about 1 min of running time things ...
FIX posted 1/12/2000
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| VIN | 1GCDC14N3L |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 3-speed Automatic |
| Delivery | FI / TBI |
| Symptoms | Poor Idle Quality, Misfire |
| Occurs | Cold |
Message Closed w/FIX
Vehicle Data
1990 Chevrolet C1500 454 SS
| VIN | 1GCDC14N3L |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 3-speed Automatic |
| Delivery | FI / TBI |
| Symptoms | Poor Idle Quality, Misfire |
| Occurs | Cold |
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