alternators go 'bad' in various ways;
bearings = noise
diodes = no charge, insufficient charge or discharge.
brushes = no charge
There are several signs that an alternator is going bad. A few signs are dim lights, smell, warning lights, and a dead battery.
The car will be jumping( going up and down) you could only feel it when your car is at a stop.
There are generally two signs that the alternator is going bad. First is the noise. A new noise will begin to be heard. Something like a whining when the car is accelerating. Second is the smell. You may smell burning from the engine department.
Usually no warning signs unless a bearing is going bad, Other than that it just stops charging the battery. what about overcharging? alternator is 10 months old, as is battery, same problem
A few symptoms and obvious signs of a bad alternator are the battery not charging, dim lights, and a warning light.
To fix the P1449 code related to the CV (Control Valve) or throttle position circuit on a Mazda Protege, start by inspecting the throttle position sensor (TPS) and its wiring for any signs of damage or corrosion. Ensure all electrical connections are secure and free from moisture. If the sensor appears faulty, replace it, and clear the code to see if it reoccurs. Additionally, check related components like the intake system for any vacuum leaks that may affect performance.
Signs that your alternator is going bad will include but not be limited to: Electronics such as Stereo, CB, Etc turn off. Gauges such as Speedometer and Tach read in accurately or stop functioning. Motor won't start.
A clear sign is if your vehicle wont start without a boost, but fires up fine when boosted. Also dimming lights when vehicle is shut off or running, all signs you alternator is not charging your battery.
It is built into your alternator
The alternator in a car may need to be replaced if some simple signs are noticed. A noise may originate from under the hood, or lights in or on the car may dim or flash.
A bad alternator will not give proper power to the vehicle. Dim lights, buzz in the stereo or a dead battery could all be causes of a bad alternator.
The signs of a bad transmission in a Mazda might include hard shifting or a refusal to shift into certain gears. A revving of the motor during the shift can also be a sign of a bad transmission.