LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

2000 LS400 Serpentine belt shredding

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Old 08-31-23, 10:39 PM
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Gummy7748
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Default 2000 LS400 Serpentine belt shredding

I've replaced it twice with two different brands, but something is causing it to shred the sides of the belt. Do I need to adjust a pulley? Do I need to replace something? Please help thank you

It looks like something might be causing it to get pushed off the pulleys causing it to get frayed.
Old 08-31-23, 10:58 PM
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LeX2K
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One of the pulleys is not straight you should be able to eye which one.
http://www.japan-parts.eu/lexus/us/2...601_water-pump

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Old 09-01-23, 10:22 AM
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paulo57509
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Q: Are you positioning the belt on the pulleys properly on installation? Your image shows the belt isn't on the outermost rib on the pulley. Or is this happening after the belt is run for a while?


Old 09-01-23, 10:24 AM
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Gummy7748
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Originally Posted by paulo57509
Q: Are you positioning the belt on the pulleys properly on installation? Your image shows the belt isn't on the outermost rib on the pulley. Or is this happening after the belt is run for a while?

it was a new belt positioned properly when I left AutoZone five minutes from my house and that was when I got home
Old 09-01-23, 10:56 AM
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As mentioned, pulley inspection.

Just curious - why was the belt replaced in the first place?
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