After replacing serpentine belt it is making whistling sound again

Tiny
CHRISGARDNER1978
  • MEMBER
  • 1999 LEXUS LS 400
  • 230,000 MILES
I replaced my serpentine belt and my car is making the whistling sound again. Will my new serpentine belt break?
Sunday, September 30th, 2018 AT 9:00 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,602 POSTS
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
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Tuesday, October 2nd, 2018 AT 10:49 AM

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