Drivers

Symptoms of a Bad or Failing Drive Belt Tensioner

Symptoms of a Bad or Failing Drive Belt Tensioner

A drive belt tensioner is a pulley mounted on a spring mechanism or adjustable pivot point that is used to keep tension on the engine belts. Spring tensioners are designed to tension automatically while the pivot design types can be adjusted manually. Both are used to keep tension on the engine serpentine belts so that they can drive the various engine accessories.

When the tensioner has an issue, it can affect the how the belts drive the pulleys which can affect the performance and functionality of the vehicle. Usually a bad or failing tensioner will produce a few symptoms that can alert the driver of a potential problem that should be serviced.

  1. 1. 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. If the tensioner is loose the belts may squeak or squeal, especially when the engine is first started. 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.

  2. 2. Unusual belt wear

    Another symptom of a potential problem with the drive belt tensioner is unusual belt wear. If the drive belt tensioner pulley has any sort of issue it can cause unusual and accelerated wear on the belt. A bad pulley can cause fraying on the edges of the belt, and in severe cases can even cause it to break.

  3. 3. Belt-driven accessories fail

    Another symptom of bad or failing drive belt tensioner is failure of the belt driven accessories. Many of the engine’s accessories, such as the alternator, water pump, and AC compressor, can be belt driven. 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. Usually a belt that has failed because of the tensioner will have to be replaced, along with the tensioner, in order to restore full functionality to the vehicle.


Read also:


A drive belt tensioner is an important component as it is what keeps the belt properly tensioned so that it can properly drive the vehicle’s accessories.

39 thoughts on “Symptoms of a Bad or Failing Drive Belt Tensioner

  1. Do not wait for your toothed belt to completely wear out or even break. As soon as you suspect any toothed belt faults, visit a reputable website like ours for toothed belt replacement. We make the supreme quality toothed belt by making use of a flexible polymer.

  2. I do not know whether it’s just me or if everybody else experiencing issues
    with your website. It seems like some of the written text within your content are running off
    the screen. Can someone else please comment and let me
    know if this is happening to them as well? This may be a issue with my internet browser because I’ve had this happen before.
    Appreciate it

  3. Excellent beat ! I would like to apprentice while you amend
    your site, how could i subscribe for a blog website?

    The account helped me a acceptable deal. I had been a little bit acquainted of this your
    broadcast provided bright clear concept

  4. Excellent blog right here! Additionally your website lots up very fast!
    What web host are you the usage of? Can I am getting your
    affiliate hyperlink to your host? I wish my web site loaded
    up as fast as yours lol

Leave a Reply

Your email address will not be published. Required fields are marked *