What would cause an alternator to go bad repeatedly?

What would cause an alternator to go bad repeatedly?

Alternators put out alternating current, and the battery needs direct current to charge, so there is a voltage rectifier that converts it, and it can suddenly go bad, too. Dust and dirt can get into the alternator, and over time cause shorts or wear on the brushes.

What kills your alternator?

Running in full charge mode continuously can kill an alternator, so trying to have your new alternator try and charge your dead battery can result in immediate alternator failure.

What causes an alternator to stop working on a car?

Once the alternator stops working, so do all of the electrical systems required to keep a car going. Other problems can also cause a car to not start. It could be a bad starter, corroded cables, or a broken connection somewhere between the battery and starter.

What causes an alternator shaft to prematurely expire?

This is because the serpentine belt that drives it could possibly be putting EXTRA stress on the pulley in directions is shouldn’t be, thus causing the shaft bearing to prematurely expire. The quality of the parts you install are also a HUGE factor when talking about an issue like this.

What happens when the serpentine belt fails on an alternator?

The serpentine belt powers the alternator, and if it fails, the alternator will stop working the moment your belt wears out and breaks, or the pulley becomes damaged. This can also happen if the serpentine belt is not tightened correctly. Most cars have automatic tensioners, but these can fail, so it is better to double-check.

How long does it take to change an alternator?

Changing out an alternator is usually not a huge issue (about 1 book hour but depends on the vehicle). Also, ensure it isn’t some other part which is making the noise like an idler or tensioner pulley, or even the bearing on the A/C pump pulley. These would make noise around the same areas as the alternator. – Pᴀᴜʟsᴛᴇʀ2 ♦ Nov 21 ’15 at 0:40

What happens if you replace your alternator 3 times?

Replaced twice that would mean a total of 3 bad alternators, that is a serious problem. Lets assume your able to start the engine, which means your starter is good, your probably firing on all cylinders, which means good ignition coils, and a good battery.

Can a bad battery cause an alternator to burn up?

Lets assume your able to start the engine, which means your starter is good, your probably firing on all cylinders, which means good ignition coils, and a good battery. If the battery were bad, then you wouldn’t be able to start the engine so the alternator couldn’t burn up?

Why does my alternator go to full output all the time?

If the wiring between the alternator output and the battery hasn’t been checked for a problem then that needs to be done. There may be a bad connection there. The battery sense lead to the alternator also needs to be checked out to see if a problem with it is causing the alternator to go to full output all the time.

What causes the alternator to run full blast with no rest?

If something caused the alternator to run full blast with no rest, the unit could be fried. One possible situation that could cause this would be a battery with a shorted cell. The voltage regulator stops the alternator output when the charging voltage exceeds about 14V.