Question: Bmw Belt Tensioner Noise?

What are the symptoms of a bad belt tensioner?

Symptoms of a Bad or Failing Drive Belt Tensioner

  • Grinding or squeaking noise from the belts or tensioner. The most common symptom of a bad or failing drive belt tensioner is noise from the belts or tensioner.
  • Unusual belt wear. Another symptom of a potential problem with the drive belt tensioner is unusual belt wear.
  • Belt-driven accessories fail.

How much does it cost to replace a belt tensioner?

The average cost for drive belt tensioner replacement is between $213 and $241. Labor costs are estimated between $74 and $93 while parts are priced between $139 and $147. This range does not include taxes and fees, and does not factor in your unique location. Related repairs may also be needed.

Can you drive with a bad tensioner pulley?

”It is not safe to drive with a bad belt tensioner because the belt tensioner ensures sufficient tension to power the accessories. As the tensioner wears, the belt can slip at the accessories creating noise, excessive heat at the accessory pulleys, and reduce accessory performance.

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What does a bad tensioner sound like?

When the tensioner or tensioner pulley fails, the loss of tension can cause the belt and pulleys to make high-pitched rattling or chirping noises. If the pulley bearing completely fails, it can also cause a squealing or even a grinding noise. Symptom 2: Knocking or slapping. This can cause a slapping or knocking noise.

What does a bad timing chain tensioner sound like?

Listen for a metallic sound that resembles a rattling or scrapping noise. If you hear a rattle, metal to metal slapping or scraping coming from inside the cover, it indicates a timing chain noise.

How much does it cost to fix a tensioner pulley?

You will pay somewhere between $125 and $380 to have your tensioner pulley replaced. The labor should run between $45 and $155, while parts can cost as little as $85 or as much as $225.

Can you fix a tensioner pulley?

In most vehicle applications, the pulley can be disconnected from the tensioner and then replaced. But it’s best to inspect the functionality of the tensioner as well, since the unit needs to be removed to replace the pulley.

Should I replace belt tensioner?

The drive belt tensioner can wear down over time, just due to normal wear and tear. It’s a good idea to have it inspected each time you have your belt system looked at. The goal is to replace it before it actually breaks down, and causes your vehicle to run less than perfectly.

Can I put WD-40 on a squeaky belt?

The serpentine belt needs friction to do it’s job and WD40 acts as a lubricant, preventing that. It also corrodes rubber, don’t spray WD40 on a serpentine belt.

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What to put on belt to stop squeaking?

WD-40 is a water displacement lubricant and should remove the moisture from the belt ribs. In most cases, removing the moisture will stop the squeal. Allow the engine to run for a few minutes, then spray rubber dressing, also known as belt dressing, onto the belt in the same manner employed above.

How long can you drive with a bad tensioner 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.

How much does it cost to replace idler pulley?

The total price to replace the idler pulley typically ranges between $80 and $200, with the parts ranging between $40 and $90, and the total labor cost averaged between $40 and $110.

How do you know when to replace a belt tensioner?

Appearance: Cycle the tensioner (mounted on the engine) through the entire range of motion (from stop to stop) by applying torque to the arm with a wrench. The tensioner arm should move smoothly and freely. Solution: If you notice a binding, sticking or grinding tensioner arm, the tensioner should be replaced.

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