The AC belt won't affect the timing belt. However, if the check engine light is coming on, there is a code set in the computer that will identify the problem.
Take the car to a nationally recognized parts store and have them scan the computer for codes. The codes will identify where the problem is coming from.
Let me know what you find. Also, you should repair the AC belt problem.
Tuesday, March 17th, 2009 AT 1:24 PM