An automatic belt tensioner is spring loaded in order to naturally apply the proper amount of tension to the serpentine belt, which winds through the engine pulleys and is used to power multiple peripheral devices.


How long does a tensioner pulley last? It should be noted that the drive belt itself will most likely need replacing before the tensioner does. Drive belts typically last anywhere between 40,000 and 70,000 miles. There aren't a lot of warning signs that a drive belt tensioner has hit the end of its lifespan, in fact there is really only one.

how does an automatic belt tensioner work?

The automatic tensioner has a coil spring inside that applies just the right amount of force against the belt to keep it tight. The tensioner also provides a little "give" so it can absorb and cushion shock loads on the belt that occur when the A/C compressor clutch cycles on and off.

How often should you replace belt tensioner? It should be noted that the drive belt itself will most likely need replacing before the tensioner does. Drive belts typically last anywhere between 40,000 and 70,000 miles. There aren't a lot of warning signs that a drive belt tensioner has hit the end of its lifespan, in fact there is really only one.

can a belt tensioner be adjusted?

When the belt stretches, it can begin to slip, if left unattended. Not all types of drive belt systems can be adjusted. Cars equipped with an automatic belt tensioner adjust themselves over time and do not require adjustment. This article shows you the process to adjust drive belts on a pivot-style belt adjuster.

How do you change a tensioner pulley? Position the tensioner in the vise so you can access the pulley bolt. Turn the pulley bolt counterclockwise with a ratchet and a socket. Remove the bolt, the retaining washer and the pulley. Replace the pulley, washer and bolt and tighten to specified torque illustrated in the repair manual.

what are the symptoms of a bad belt tensioner?

Some of the more common symptoms of a failing or bad belt tensioner include the following.

What is the function of a belt tensioner? A tensioner maintains the correct amount of tension on the belt at all times throughout its duty cycle. It also helps protect other components such as the alternator and water pump from undue stress and premature failure. In addition, a tensioner is a relatively inexpensive part to replace.

How long does it take to replace a tensioner pulley?

You are only required to loosen the bolt that goes behind the PS pump. This will move the tensioner pulley. You will then slide the default belt off and replace with the right one. This process should not take you more than 30 minutes.

How do tensioner pulleys work? The base holds the other parts, and the spring keeps the belt pulled tight. The pulley is what facilitates movement of the belt. The tensioner arm is found on the bottom of the tensioner, and if you press on it, it will work against the spring, delivering enough slack so that you can adjust or remove the belt.

How much does it cost to fix a belt tensioner?

The average cost for a drive belt tensioner replacement is between $211 and $239. Labor costs are estimated between $73 and $93 while parts are priced between $138 and $146. Estimate does not include taxes and fees. When would you like to drop off your car?

How much is a new tensioner?

Once that pulley is damaged or loose, then you are going to have some issues with your car's performance. 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.

What does a bad tensioner pulley look like?

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. It is also possible for the tensioner pulley or bearing to wear out, in which case the vehicle will produce a grinding noise from the pulley.

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 do you diagnose a bad pulley?

Symptoms of a Bad or Failing Idler Pulley Visibly worn pulleys. One of the first symptoms of an issue with an idler pulley is visible wear on the pulley. Belt squealing. Another common symptom of a possible issue with the idler pulley is squealing from the engine belts. Damaged bearing or pulley.

What causes a belt to shred?

A drive belt will typically shred due to one of a few different issues. When the pulley wobbles (which is usually due to a bearing failure) it will cause the belt to come out of alignment and ride over top of the edges of the pulleys and can cause damage or failure.