How To Check To See If My Alternator Is Bad. First open the hood and start the engine. If your car wont start its often due to a malfunction of either the battery or the alternator.
When you start up your car look at your interior lights. While your car is running disconnect the positive battery cable. Signs of a Bad Alternator or Battery.
If its below that charge the battery with a battery charger before you conduct the test again.
The battery then doesnt store enough power for starting the car. If the vehicle continues to run your alternator is properly charging the battery. If the alternator is starting to go bad it cannot charge the battery as efficiently. A whining or grinding sound coming from your alternator while your car is in operation is a bad sign.
