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.
Fan belt squeal spray.
If the squeak goes away your belt is the culprit.
It is applied to the belt while the engine is running and you should notice that the squeal stops almost instantly.
Similar to when your tires squeal on the pavement this slip causes a dreadful noise.
How to fix a squeaky belt in your car diy with scotty kilmer.
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.
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.
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.
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.
Spray the belt dressing directly onto the belt.
After turning off the engine the belt can be visually inspected for wear and tear.
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.
Sometimes a belt will squeal upon starting a vehicle and will disappear shortly thereafter.
Belt squeal squeaky belt belt noise.
The secret to fix a squeaky belt in your car.
A main drive belt and separate ones for the alternator fan water pump hydraulic steering etc.
If a noise remains after spraying your belts it could be a bad pulley or a tensioner that needs replacement.
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.
The sound of a squeaky belt in your vehicle s engine is usually because the rubber belt is slipping on the metal pulley.
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.
Short sharp blasts work best to ensure the belt is not saturated.