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dirt and dust usually could possibly be a dry worn belt but also check the belt tensioner it can be to weak and allow squeaking

Also, sometimes a belt with small cracks in it will make noise. If you haven't replaced the belt for a while I'd be suspicious of the cracks.

I've had this happen...check to make sure that water or anti-freeze did not hit the belt.

Either the belt is worn out or the tensioner is defective.

This also may be caused by your pulleys. For instance if the harmonic balancer gets out of line with the rest of your pulleys it can cause a squeak or if the bearing in one of your other pulleys has gone bad it can cause a squeak also.

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โˆ™ 2015-07-17 17:56:34
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Q: What are the causes of a squeaky serpentine belt in vehicles?
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A squeaky belt is usually caused by a bad belt, a missaligned pulley, or something leaking on the belt.


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Either the belt is worn out or the tensioner is defective.


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Yes, as long as there is no damage to it


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In the newer vehicles the serpentine belt drives all the pumps, compressor and the alternator on the engine.


How do you repair squeaky serpentine belt?

You have a mechanic check for proper belt tension. Trust me, in the long run this is the smartest, safest and CHEAPEST way to solve the problem.


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No vehicle is specified, however, in all vehicles I have seen and/or worked on, the serpentine belt must be removed from the pulley that spins the alternator. NOTE: Some vehicles have another, separate, serpentine style belt that runs the a/c compressor and may have to be removed to remove the belt running the alternator. (Complete removal is not necessary unless the belt needs to be replaced.)


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Why doesnt 1997 Lincoln continentel start without the serpentine belt?

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