How To Tell If Your Alternator Is Bad Or Battery. If either part is compromised the only way to diagnose is by looking for the specific symptoms of each. Some of the things to look for are no-starting and trouble starting dimming lights and problems with stereo system output.
Another way to tell if an alternator is draining your battery is by running your car and unplugging the batterys positive connection. The best way to test the alternator is with a charging system analyzer or carbon pile tester. If the alternator is bad it wont charge the batteries even if they are new.
If the alternator light which is sometimes identified as Charge doesnt come on the.
On the other hand if they start off strong and weaken. Schedule a Free Battery Check. If there is any power left in the battery the warning lights on the dashboard should come on. On the other hand if they start off strong and weaken.
