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

1999 serpentine belt routing

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Old 07-29-18, 04:46 AM
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Kal333
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Default 1999 serpentine belt routing

Anyone have a diagram of the routing.
I can't find one anywhere.

Also, how do you get the tensioner to add tension.
Even if I knew the routing it seems as if there's too much slack in the belt although the proper size.

Belt came off while driving and was shredded.
Old 07-29-18, 05:17 AM
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Kal333
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This gave me a good laugh. As embarrassed as I am to say it, I removed the fan not realizing it was part of the pulley system and now I'm coming up short and need to release tension. 😂😭
Old 07-29-18, 06:15 AM
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Moarpower
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Usually there is a picture under the hood
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Old 07-29-18, 06:29 AM
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billydpowe
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Originally Posted by Moarpower
Usually there is a picture under the hood
​​
and if so: use a 1/2 inch brake over bar in the square hole to release the tension... see you are learning
Old 07-29-18, 07:23 AM
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Kal333
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Oh yes. I'm only just learning.
First repair was replacing my radiator and now this.
Just finished getting it together.
I tackled it with a mere crescent wrench.
The squealing that was once there has gone and everything seems to be running much better than when I was running with the old belt.
But still a slight wobble in the fan that's causing the bolts to loosen.
Its like I can't get it tight enough.
What can be going wrong? My lack of proper toolage?
The bearing and clutch seem just fine.
Old 07-29-18, 07:33 AM
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Moarpower
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The fan assembly is vibrating? Could have a bent shaft.

As soon as you can buy a set of sockets and a ratchet.
Old 07-29-18, 12:34 PM
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billydpowe
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But still a slight wobble in the fan that's causing the bolts to loosen.
take it off and put it back on, bolts loose, then re-tighten, see if that works..
Old 07-29-18, 12:48 PM
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Good on you Kal333.You'll fix it.
Old 07-29-18, 02:51 PM
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Kal333
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Thanks, guys.
I really appreciate all of the help and encouragement.
This is my first car and I'm really enjoying putting the work in.
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