How do I know if my tensioner pulley is too tight? (video)

How long does a belt tensioner last?

You should expect to replace your belt tensioner in the 40,000-70,000 mile range. It is also customary to swap more than one part simultaneously, usually a worn-out pulley from other systems and even the serpentine belt itself. via

How tight should a belt tensioner be? (video)

How much does a pulley cost to fix?

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. via

Does tension pulley affect acceleration?

Because the pulley possesses mass, you need to apply a non-zero net torque to it to increase its angular acceleration (assuming that is the goal here). If the tensions were the same on both sides of the contact point between the string and the pulley, there would be no angular acceleration. via

Does the tensioner pulley spin?

Checking the Tensioner

Spin the pulley to see if it spins freely. If you hear grinding or the pulley doesn't spin freely, replace the tensioner. When you replace the belt, it should take a lot of muscle power to move the tensioner. If you can move it easily, the spring tension is most likely not tight enough. via

Can a bad tensioner cause overheating?

Another symptom of bad or failing drive belt tensioner is failure of the belt driven accessories. A seized or loose drive belt tensioner can cause the belt to snap, which will disables those accessories and can cause problems such as overheating, a dead electrical system and battery, or a disabled AC system. via

How much does it cost to replace a timing belt tensioner?

The average cost for timing belt tensioner replacement is between $358 and $447. Labor costs are estimated between $269 and $339 while parts are priced between $89 and $109. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location. Related repairs may also be needed. via

What noise will a belt make if the pulley is misaligned?

A chirping noise that increases in frequency as the engine is revved up can be the result of belt vibration caused by misaligned pulleys. In fact most cases of belt noise are caused by misaligned pulleys and belts. via

What does a misaligned belt sound like?

Chirping can be due to misalignment of the drive belt, but could also be due to pulley misalignment, worn pulley bearings, worn belt ribs, contamination from oil, coolant, power steering fluid, brake cleaner, belt dressing, or other substances. Squealing is usually caused by slipping between the belt and the pulleys. via

What does a misaligned serpentine belt sound like?

Misalignment angles of as little as three degrees can cause an annoying chirp as well as increase the chances of the belt jumping its pulley. Insufficient belt tension adds to the likelihood of belt loss. Misalignment (and the resulting noise) is most pronounced on short spans between pulleys. via

Can you tighten alternator belt too much?

An over-tightened belt can burn out any bearing that the belt rotates on, including alternator, power steering pump, A/C compressor, idler pulleys, etc. An over-tightened timing belt can ruin any pulley bearing it is connected with. via

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