Hi there,
A check light may or may not flash, but you will have to get a scan done to check the fault code that is indicated by the light. As for the noise, it may be a faulty bearing on the alternator, water pump. A/c or a idler pulley, a mechanic should be able to listen to this and advise you.
Mark (mhpautos)
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Tuesday, November 24th, 2009 AT 5:47 PM