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.
Fan belt squeal spray.
If the squeak goes away your belt is the culprit.
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.
Short sharp blasts work best to ensure the belt is not saturated.
Wd 40 is a water displacement lubricant and should remove the moisture from the belt ribs.
It is applied to the belt while the engine is running and you should notice that the squeal stops almost instantly.
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.
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.
This may be occurring due to any number of factors including the following.
The sound of a squeaky belt in your vehicle s engine is usually because the rubber belt is slipping on the metal pulley.
A main drive belt and separate ones for the alternator fan water pump hydraulic steering etc.
How to fix a squeaky belt in your car diy with scotty kilmer.
Spray the belt dressing onto the belt until the entire belt is wet.
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.
If a noise remains after spraying your belts it could be a bad pulley or a tensioner that needs replacement.
After turning off the engine the belt can be visually inspected for wear and tear.
Spray just enough wd 40 onto the belt to lightly cover the area where the squeal occurs.
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 directly onto the belt.
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.
With the engine running spray the belt dressing directly onto the back of the fan belt.
Oversaturating the belt will result in severe slipping which can permanently damage the belt.