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i just bought a 2001 toyota carolla and i havnt had it a month. its been checked out by the dealer and everything is running fine. why then would the check engine light come on and stay on.

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Answers by: Mikesta69 | scosol | Em2035 | Mike T.

Mike T.'s Answer:

Reply by Mike T. 839 days ago

chances are you need to replace the gas cap. This may sound silly, but if there are any air leaks in the seal, the engine light will come on, since there is too much air in the gasoline mixture.

good luck