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1994 Chevrolet Astro 4.3L Surge
Vehicle has a surge at light load, cruise speeds 45-70 mph. Surge is steady as long as the egr system is active. TCC was unhooked, no change. Scan tool data during surge shows: Short Term Fuel Trim: 66-60 O2: Rich (0.9 v) Trim Cell: 9 Base Pulse Width: 4.9 EGR...
FIX posted 7/10/1998
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| VIN | 1GCDM19Z9R |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / TBI System |
| Emissions | OBD 1, US Federal |
| Symptoms | Surge |
| Occurs | Hot, Cruise, Light Load, 45-70 |
| Misc. | Tbi, Digital EGR |
Message Closed w/FIX
Vehicle Data
1994 Chevrolet Astro
| VIN | 1GCDM19Z9R |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / TBI System |
| Emissions | OBD 1, US Federal |
| Symptoms | Surge |
| Occurs | Hot, Cruise, Light Load, 45-70 |
| Misc. | Tbi, Digital EGR |
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