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No, the check engine light does not mean that your alternator is bad. My alternator went out in my cavalier and there were no warning signs until the car started to die on me. the gages, wiper blades(I was using them at the time) and radio were all acting funny-fading and turning on and off. Finally it quit and wouldn't turn over. Had to be towed to mechanic and they replaced alternator with a new one for about $280.00. You can get a rebuilt one, they cost less and it's even better if you know someone who can replace it for you.

2007-02-11 22:51:02
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Q: Can it be because of the alternator that your check engine light is on How much is it to change the alternator?
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