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My 2010 Acadia has a hard time starting. Sometimes barely turns over. Is it the starter or the alternaror. Just replaced the battery and it didnt make a difference

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Remove the battery leads and clean posts/contacts. with a wire brush. Clean the connectors on the end of the wire in a similar manner. Rub contacts with Vaseline. Wait two hours, put key in the ignition and reconnect the battery.

The alternator only charges the battery. If it is faulty, the Red battery light will come on.

The starter may be weak, but they usually work, or don't work.

Charge the battery overnight with a battery charger to make sure the battery is full of charge.

If it still does it, you need an auto electrician and a battery stress test and the output of the alternator checked. My thought is dirty contacts and low battery charge.

Posted on Dec 29, 2016

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