Fuel Filters
Check Engine Light
Chevy Monte Carlo

You replaced your 02 sensor for Monte Carlo 1999 you still get engine light what else could it be possible?

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Answer

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Wiki User
12/27/2006

The check engine light means that the computer has a problem code that you need to read. Use a diagnostic code reader for your vehicle. Your Chevrolet should be OBD2 compliant, meaning that you need an OBD2 code scanner.