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Catalyst Efficiency
Got a real puzzling one. Has a catalyst efficiency code. Fuel trims normal. O2 sensors tell me the cat is functioning. Upstream switches rich/lean. Downstream pretty steady at 700 millivolts. MAF cleaned. Car has had the cat replaced one year ago by others. Ru... Login to read more. ![]()
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| Engine | 1.4 L |
| Trans | 6-speed Automatic (Electronic) |
Vehicle Data
2013 Chevrolet Cruze Eco 1.4L
| Engine | 1.4 L |
| Trans | 6-speed Automatic (Electronic) |

75 Replies Received
75 Replies Received