Quick Answer: What Does A Bad Alternator Pulley Sound Like?

Can a bad alternator destroy a new battery?

If an alternator goes bad, it certainly can kill a battery.

Car batteries don’t like being run all the way down.

If the alternator was ailing for a while, the battery may have been low for a long time, which also isn’t good for a battery.

Fully charge the old battery and have it load-tested..

How do I know if my battery is bad or my alternator?

If the engine starts but dies immediately, your alternator probably isn’t keeping your battery charged. If a jump starts and keeps your car running, but the car can’t start again off of its own power, a dead battery is likely your answer.

How much does it cost to replace idler pulley?

The cost to replace the idler pulley of your driver belt will usually be somewhere between $80 and $200. The cost for the new part should only be anywhere from $40 to $90, while the cost of the labor will be anywhere from $40 to $110. These prices do not include added taxes and fees charged by the auto shop.

What does a bad pulley sound like?

When the engine is idling, a bad pulley may make a squealing sound. This is due to the bearings in the pulley going bad. The bearings may also make various other sounds such as clattering or even a rumbling sound, making the vehicle sound as if there was much more wrong than a bad pulley.

What noise does a failing alternator make?

There are many different parts that spin inside your vehicle’s alternator to produce electrical current. If one of these parts becomes worn or breaks, this could cause a grinding or whining noise. Specifically, worn out bearings inside the alternator have been known to cause this type of noise.

What happens if the tensioner pulley fails?

If the drive belt tensioner pulley has any sort of issue it can cause unusual and accelerated wear on the belt. A bad pulley can cause fraying on the edges of the belt, and in severe cases can even cause it to break.

What kind of noise does a bad alternator make?

Alternator Whining Noise A common sound made by failing alternators is a very high pitched whining noise that you’ll hear when the engine is running. When the RMPs increase, such as when you accelerate, you’ll hear the noise get higher in pitch as the pulley spins faster.

Can you jumpstart a car with a bad alternator?

Fortunately, it is possible to jumpstart your vehicle with a bad alternator so that you can get it back on the road and drive it to the nearest auto shop. The vehicle only needs enough electricity to power its onboard computer (engine control unit) and fuel injectors.

What are signs of alternator going out?

6 Symptoms of a Failing AlternatorThe indicator light. … Headlights are dim or flickering. … Other electrical failures. … Strange noises. … Car stalls or has difficulty starting. … Battery dies.

Does a bad alternator make a clicking noise?

It requires a good deal of energy to crank the car’s motor, and if a battery is not replenishing its power properly due to a faulty alternator, it will become drained and ineffective. You will hear a clicking noise while attempting to start the car, and the engine will have difficulty turning over.

What does a failing alternator smell like?

One of the smells associated with a failing alternator is an electrical or rubber burning smell. If you smell these, it is likely that you have a bad alternator on your hands.

Can you drive with a bad pulley?

The engine can get overheated and then damaged due to a dysfunctional water pump. So, how long can you drive with a bad idler pulley? The safety recommendation is not to drive the car at all and take it to a mechanic immediately. You should be concerned if the vehicle makes squeaking or rattling noises.

How do you know if your alternator pulley is bad?

The alternator pulley spins on a shaft, which in turn is supported by either bearings or bushings. If the pulley is not in correct alignment with the belt, if it’s canted on the shaft or if the bearings and bushing are worn out, the growling or whining noise will let you know there’s a problem.

What does a bad alternator bearing sound like?

The bearings are inside the alternator and are what the rotor rotates on to create the power. Many times, the bearings will squeak or make a grinding sound if they are going bad. If that is the case, it is likely that you will have to replace the alternator.

What happens when alternator goes bad while driving?

If the problem is a bad alternator, your car will slowly lose power. You’ll be driving down the road, your lights will dim, and you’ll lose power and die. … 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.

How long can you drive with a bad alternator?

Starting with a fully charged battery you will probably get 100 Miles before it wears down too far. It also depends greatly on not running headlights or running lights. If you have a car that always runs with the headlights on, and if your battery is several years old, 50 miles might be a better estimate.