After replacing serpentine belt it is making whistling sound again

1999 LEXUS LS 400
230,000 MILES
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CHRISGARDNER1978
  • MEMBER
  • 1 POST
I replaced my serpentine belt and my car is making the whistling sound again. Will my new serpentine belt break?
Sep 30, 2018 at 9:00 PM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,840 POSTS
  • ASE Certified Mechanic
Hello,

It sounds like you have an accessory or idles pulley that is going bad. Please remove the belt and spin the pulleys by hand to see which one is making the noise. This video should help show you what to do. On a different car but it shows the procedure.

https://youtu.be/UzUpQEQTaVE

Please run down this guide and report back.

Cheers, Ken
Oct 2, 2018 at 10:49 AM
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