What do you need to know about idler pulleys?
Average rating from 322 customers who received a Idler Pulley Replacement. Idler pulleys are a newer style of tensioner and guide for your vehicle’s drive belt. They help to maintain control and tension on the belt as it rotates at high speeds.
Can a idler pulley be removed from an alternator?
To remove the drive belt, first release the tension to the belt. If your idler pulley attaches to the alternator, you will have to remove the bolt attaching the pulley to the alternator and push the entire alternator down to relieve the tension on the belt.
Why does my idler pulley squeal when I Turn on the engine?
Another common symptom of a possible issue with the idler pulley is squealing from the engine belts. If the surface of the idler pulley wears, or the pulley seizes or binds it may cause the engine belt to squeal as a result of it rubbing against the surface of the pulley.
What happens when the idler pulley on a Mini Cooper fails?
The idler pulley is the component that keeps the belts from coming into contact with anything else. Symptoms of Idler Pulley Failure on Your MINI Cooper If the idler pulley experiences an issue you should hear a chirping noise coming from the engine. The puller bearing will no longer be smooth.
When does an idler pulley need to be replaced?
Most engines use one idler pulley, and one tensioner pulley, though some designs do use more than one idler. Over time, idler pulleys will eventually wear out and need to be replaced. Usually a bad or failing idler pulley will produce a few symptoms that can notify the driver of an issue. 1. Visibly worn pulleys
What does it mean when your idler pulley rattles?
Average rating from 138 customers who received a Loud squealing or rattling is coming from engine Inspection. Idler pulleys are engine pulleys that are responsible for guiding and tensioning the engine drive belts.
Another common symptom of a possible issue with the idler pulley is squealing from the engine belts. If the surface of the idler pulley wears, or the pulley seizes or binds it may cause the engine belt to squeal as a result of it rubbing against the surface of the pulley.
Why is my Mini idler pulley making a rattling sound?
To gain access to the pulley and release the tension on the belt, see AGgranger’s write up on serpentine belt replacement. (MINI Belt… My idler pulley is making a high pitched rattling sound, so I figure the bearings are going bad.
What is the idler pulley on a Mini Cooper?
I pinpointed the source as the idler pulley (also known as the “stationary pulley” or as MINI calls it, the “adjusting pulley”) after removing the passenger side wheel and wheel well liner and using a rubber tube “stethoscope”. The idler pulley doesn’t run anything like the supercharger pulley or the AC pulley.
How to tell if your idler pulley is bad?
Symptoms of a Bad or Failing Idler Pulley 1 Visibly worn pulleys One of the first symptoms of an issue with an idler pulley is visible wear on the pulley. 2 Belt squealing Another common symptom of a possible issue with the idler pulley is squealing from the engine belts. 3 Damaged bearing or pulley
What’s the difference between an idler pulley and a tensioner pulley?
They remove the often-annoying engine drive belt vibration that generally occurs if there is too much slack in the drive belt system. The difference between the two is that the idler pulley is mounted on a fixed structure while the tensioner pulley is mated to an adjustable device.
The idler pulley is the component that keeps the belts from coming into contact with anything else. Symptoms of Idler Pulley Failure on Your MINI Cooper If the idler pulley experiences an issue you should hear a chirping noise coming from the engine. The puller bearing will no longer be smooth.
Where does the energy come from in an idler pulley?
Since the energy produced by the engine comes from the linear (typically up and down movements) motion of the pistons, this has to be transmitted to the crankshaft to convert it into rotary motion. The drive belts that are connected to the engine also move around as the crankshaft rotates.