How much does it cost to replace an alternator pulley?

How much does it cost to replace an alternator pulley?

There is an average cost for a drive belt idler pulley replacement. Labor costs are between 64 and $81 while parts are between $79 and $83. Taxes and fees are not included in the estimate.

Can I put a bigger pulley on my alternator?

Yes, you can increase your alternators overall output as well as increase power output at engine idle speeds.

What happens when alternator pulley goes bad?

If the internal clutch mechanism is bad, the pulley may slip and fail to drive the alternator, or it may remain locked all the time – increasing noise, vibration and stress on the belt drive system.

How long does it take to replace an alternator pulley?

In general, it will take about two hours for you to replace an alternator on your own, though this could vary somewhat depending on your knowledge of car mechanics.

How do I know if my alternator pulley is bad?

If you ever hear growling or whining noises coming from under the hood, you could have alternator problems, which should be checked out by a professional ASAP. This growling or whining sound happens when the belt that turns the alternator’s pulley becomes misaligned or rubs against the side of the pulley.

Does alternator pulley size matter?

In order to boost output at lower RPM, it is beneficial to spin the alternator faster by using a slightly smaller pulley to accomplish this. In most cases you should be able to use the alternator with the smaller pulley without having to use a smaller belt.

What is alternator pulley ratio?

The pulley ratio is the ratio between the outer diameters of the engine drive pulley and the alternator pulley.

Why do alternators have a clutch pulley?

As opposed to traditional solid pulleys, they allow the alternator to “free-wheel” or “overrun” every time the engine decelerates and, at the same time, dampen vibrations at the alternator. They come in two types: one-way clutches (OWCs) and overrunning alternator decouplers (OADs).

Can you replace just the alternator pulley?

In many cases it is possible to remove and install the overrunning alternator pulley while the alternator is still on the engine. The plastic protective cap cannot be re-used after it has been removed from the pulley. A replacement cap is supplied with the new part.