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

1999 LS400 died, cranks but won run.

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Old 12-23-20, 03:00 PM
  #16  
bradland
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Originally Posted by MilkoLippe
Its a 1999 car. I drove it about 6 years.

Maybe good to make a warning post for aftermarket quality?? This was a gates belt.. sad..will miss the car.
Have you verified there was physical damage to the engine? While the belt definitely does not look healthy in the pic cracking on the outer core doesn't mean it's not doing it's job. I'd pull both cam gear covers off and check the markings on the engine vs any marks hopefully left on the belt. I'm not sure if slipping one tooth is enough to cause any damage. Also, check the tensioner as it's easy to access down below. See pic-

Old 12-23-20, 03:55 PM
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Originally Posted by bradland
Have you verified there was physical damage to the engine? While the belt definitely does not look healthy in the pic cracking on the outer core doesn't mean it's not doing it's job. I'd pull both cam gear covers off and check the markings on the engine vs any marks hopefully left on the belt. I'm not sure if slipping one tooth is enough to cause any damage. Also, check the tensioner as it's easy to access down below. See pic-
The belt has snapped. Its totally loose. No tension at all. Very weird..
Old 12-23-20, 04:17 PM
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bradland
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Originally Posted by MilkoLippe
The belt has snapped. Its totally loose. No tension at all. Very weird..
Snapped or loose?
If it had "Snapped" (which they don't do, they fray as the internal fibers break apart) it wouldn't be in place around the cam gear. It sounds like your tensioner has failed, which caused the premature and accelerated wear of the belt. You said in the OP you didn't hear any rattling noise or mechanical knocking...
I'd investigate further before throwing in the towel.

Old 12-24-20, 01:39 AM
  #19  
MilkoLippe
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Originally Posted by MilkoLippe
The belt has snapped. Its totally loose. No tension at all. Very weird..
Maybe you are right. Then the tensioner snapped ?? Either way the distribution is ****ed. So the engine is probably an omelet.. it will be picked up soon.. now looking for an other cheap *** car for the next year.

Cheers.

Old 12-24-20, 01:40 AM
  #20  
MilkoLippe
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Originally Posted by MilkoLippe
The belt has snapped. Its totally loose. No tension at all. Very weird..
Maybe you are right. Then the tensioner snapped ?? Either way the distribution is ****ed. So the engine is probably an omelet.. it will be picked up soon.. now looking for an other cheap *** car for the next year.

Cheers.


Old 12-24-20, 04:40 AM
  #21  
ELexis
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Originally Posted by MilkoLippe
Yes it is.. I schould have an other 20 K on this belt but out of missery checked the belt. its snapped.. Is the VVTI version of the 1UZ-FE interference? I know the old version is..
When the belt was replaced, were the belt tensioner, idler and pully replaced as well (Gates timing component kit TCKWP298)?
May be as bradland stated, that the tensioner may have become defective or seized, causing the belt to become loose or just snap.
.

Last edited by ELexis; 12-24-20 at 04:48 AM.
Old 12-24-20, 09:07 AM
  #22  
MilkoLippe
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Originally Posted by ELexis
When the belt was replaced, were the belt tensioner, idler and pully replaced as well (Gates timing component kit TCKWP298)?
May be as bradland stated, that the tensioner may have become defective or seized, causing the belt to become loose or just snap.
.
Yes I replaced the whole set. Also water pump and tensioner and the roller in the middle. All things including camshaft seal. Beats me.. Aftermarket junk maybe?
Old 12-24-20, 09:21 AM
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I understand, very unfortunate experience..Believe Gates manufacture many of the OEM belt kits. Usually the manufacturer will have its information on the belt itself to confirm from that manufacturer. Are you able to still view any information on the belt? If so, it may be worthwhile to contact Gates with photos / documentation when purchased/ installed and when broke (dates & mileage etc.). Especially since all the related components were replaced along with the belt. May require some of your time however, may be worthwhile providing what information you have.
Gates had a few recall in the past;
Honda Recall Issued over Gates Timing Belt Problems
https://www.aboutlawsuits.com/honda-...recall-156199/

Gates Corporation Tru-Flow Water Pump Recall.
https://static.nhtsa.gov/odi/rcl/201...4E007-4598.pdf



Last edited by ELexis; 12-24-20 at 09:29 AM.
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