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Very ' rich ' off idle in closed loop- fine in open
Case study 1999 Chevy S-10 4.3 w motor. Vehicle has a severe power issue with converter burn and fuel smell out tail pipe in Closed loop off idle. Runs just fine at idle and performs just fine if made to go into open loop. The vehicle is fixed and this is a s... Login to read more. 
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55 Replies Received
55 Replies Received
| Engine | 4.3 L |
| Trans | 4-speed Automatic (Electronic) |
| Symptoms | Excessive Emissions |
Vehicle Data
1999 Chevrolet S10 LS 4.3L Excessive Emissions
| Engine | 4.3 L |
| Trans | 4-speed Automatic (Electronic) |
| Symptoms | Excessive Emissions |
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