My little discussion about timing belt replacement
Experts strongly recommend that you have your car checked by a certified repair technician as soon as possible whenever your check engine light goes on. Ignoring the problem could lead to engine failure or some other form of system failure, even if your car appears to be operating normally. It is in your best interest to let experts determine the source of the problem, since the issue could be as minor as an improperly replaced gas cap or as complicated and as serious as engine or transmission malfunction. A certified repair technician has the knowledge and the access to equipment essential to a proper diagnosis of your problem. Some issues that require proper diagnosis would be sudden illumination of any dashboard warning lights (such as the check engine light), emission failure, engine or transmission performance or steering and ride control malfunction.