Why does my alternator rattle when the serpentine belt is off?
Why does my alternator rattle when the serpentine belt is off?
When you have the serpentine belt off, test the alternator pulley… It’s supposed to be a “clutched” pulley that free-wheels in one direction… It’s very common for these to fail, and one of the tell-tale signs is the shaking of the serpentine tensioner…
What does it mean when your serpentine belt is slipping?
Pulleys tend to wear out or fall apart in some cases while damaged tensioners loosen the serpentine belt. Weak glow of the battery warning light When you have a weak glow on the dashboard it could mean the serpentine belt is severely slipping. In this case, the alternator is barely producing enough voltage output (hens the warning light).
What causes belt tensioner ” chatter ” at idle?
With the gear in ‘D’, A/C on and the handbrake pulled, I popped the hood and noticed for the first time that the main belt tensioner is “chattering” (video link below): The car has had an issue with vibration for some time now. The symptoms are as follows:
What are the symptoms of a bad belt tensioner?
Squeaking or Grinding Noise. One of the most common symptoms of a failing belt tensioner is unusual noise coming from either the tensioner or the drive belts. If the drive belt noise resembles a squeal or a squeak, it is possible that the belt tensioner is loose. This is especially the case when starting the engine first thing in the morning.
Squeaking or Grinding Noise. One of the most common symptoms of a failing belt tensioner is unusual noise coming from either the tensioner or the drive belts. If the drive belt noise resembles a squeal or a squeak, it is possible that the belt tensioner is loose. This is especially the case when starting the engine first thing in the morning.
Why does my belt tensioner make a grinding noise?
If the noise you hear is similar to a grinding sound, then it is possible that the tensioner bearings or the tensioner pulley is the problem. These parts tend to wear out. This is what causes the grinding noise since the metal parts will be rubbing against each other. This is another symptom of a failing belt tensioner.
What does the spring on a belt tensioner do?
The spring keeps the drive belt in its correct tension. The tensioner arm is a mechanism that allows for the adjustment or the removal of the drive belt. It delivers enough slack on the drive belt for easier adjustments. The base is what holds all the different parts together.
Why does the tensioner make a squeaking noise?
Since the tensioner is not able to maintain the correct tension on the belts, it produces a squealing or squeaking sound. This is most evident on the drive belts. If the noise you hear is similar to a grinding sound, then it is possible that the tensioner bearings or the tensioner pulley is the problem.
