How do I know if my alternator decoupler pulley is bad?
How do I know if my alternator decoupler pulley is bad?
The pulley should lock up when it is turned one way, but freewheel when it is turned in the opposite direction. If the internal clutch mechanism is bad, the pulley may not drive the alternator, or it may remain locked all the time increasing noise and vibration.
Can I drive with a bad alternator pulley?
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. The car can still run for months or break after a few days.
Can I put a smaller pulley on my alternator?
Can I put a smaller pulley on my alternator? A smaller pulley on the alternator will spin it faster. This can be done, with the provision that you can only go so small on the pulley before the small diameter causes problems by bending the belt into too small of a radius.
How does an alternator pulley go bad?
Loose or Worn Alternator Belt When the crank turns, the belt pulls the other pulleys and causes them to spin, including the alternator pulley. Naturally, the friction caused by spinning through so many pulleys at high speeds will eventually wear the belt out.
How much is an alternator pulley?
The price range of an aftermarket alternator pulley usually falls anywhere between $17 and $130.
What happens if alternator pulley breaks?
A broken or seized pulley can quickly lead to a torn belt, or in less serious cases, the belt falling off of the engine. An engine without a belt can quickly run into issues such as overheating and stalling, as it’s the drive belt that allows the engine accessories to function.
How much does it cost to fix 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.
Does the pulley size on an alternator matter?
When the engine is idling, the alternator will not produce as much power because it is turning slower. 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.
What is the pulley on the alternator?
The alternator pulley allows the V-shape or serpentine belt to spin the alternator and is driven by the engine’s accessory drive system. Commonly made from stamped steel or cast aluminum, alternator pulleys are available in two types. One type is grooved for use with a V-type fan belt.