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1991 Chevrolet Corsica 3.1L Excessive Emissions
this one came in for im/240 failure {co & hc}. seems to run rich at idle only{block learn 100 @ idle,120 @ 2000rpm}. vacuum is 17.5 @ idle {1.4-1.6v map} and 20 @ 2000rpm {0.9-1.0v map}. all sensors scope out good. o2s is switching better at cruise than at idl...
FIX posted 7/11/2000
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Message Closed w/FIX
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| VIN | [No VIN Available] |
| Engine | 3.1 L / 6 cyl |
| Symptoms | Excessive Emissions |
| Occurs | Idle |
| Misc. | Dis |
Message Closed w/FIX
Vehicle Data
1991 Chevrolet Corsica
| VIN | [No VIN Available] |
| Engine | 3.1 L / 6 cyl |
| Symptoms | Excessive Emissions |
| Occurs | Idle |
| Misc. | Dis |