Fan Belt Squeal Spray

The sound of a squeaky belt in your vehicle s engine is usually because the rubber belt is slipping on the metal pulley.

Fan belt squeal spray.

Aside from being embarrassing a squeaky fan belt can be mildly if not terribly bothersome when listening to it squeal for extended periods of time. Similar to when your tires squeal on the pavement this slip causes a dreadful noise. Wd 40 is a water displacement lubricant and should remove the moisture from the belt ribs. But when the belt dries out and or the solvent flashes off the rib surface will become very tacky and aggressive which will actually cause the noise to return even louder.

The secret to fix a squeaky belt in your car. It is applied to the belt while the engine is running and you should notice that the squeal stops almost instantly. Short sharp blasts work best to ensure the belt is not saturated. When belt dressing oils or solvents are placed on a belt the belt s rib surface will initially become lubricated which may quiet the noisy belt temporarily.

Spray the belt dressing onto the belt until the entire belt is wet. If a noise remains after spraying your belts it could be a bad pulley or a tensioner that needs replacement. How to fix a squeaky belt in your car diy with scotty kilmer. Spray the belt dressing directly onto the belt.

Oversaturating the belt will result in severe slipping which can permanently damage the belt. Spray just enough wd 40 onto the belt to lightly cover the area where the squeal occurs. Spray on belt dressing if you re unable to stop the squeal with either of these methods you can use a spray on belt dressing compound widely sold at automotive shops. If the squeak goes away your belt is the culprit.

As the engine runs the fan belt will be moving quickly so you can leave the can in one place and spray onto the belt as it spins. After turning off the engine the belt can be visually inspected for wear and tear. If you feel it s a specific belt grab a spray bottle filled with water and squirt the inner lining of the belt as it runs. This may be occurring due to any number of factors including the following.

With the engine running spray the belt dressing directly onto the back of the fan belt. It is generally easier to determine when alternators are the cause of the squeak since they tend to be closer to the top and front end of the engine.