Timing belt or chain for Avalon? - Toyota Nation Forum : Toyota Car and Truck Forums
1st Generation (1995-1999) Specific discussion of the first generation Toyota Avalon

 
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#1 Old 09-24-2005, 09:36 AM
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Question Timing belt or chain for Avalon?

Just wondering if anyone knows if the new Avalon (05+ model year) has a timing belt or timing chain for the 3.5L V6 engine? And if a chain, what is the change interval (if any)? Thanks for the help!

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#2 Old 09-24-2005, 11:19 AM
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Lex,

I've read that it is a chain.
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#3 Old 09-24-2005, 03:15 PM
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Question

Quote:
Originally Posted by johnd
Lex,

I've read that it is a chain.
So, the new Avalon's 3.5L V6 has a timing chain & the 3.3L V6 in the Camry & ES330 is a Timing belt correct?

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#4 Old 09-24-2005, 05:13 PM
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yup yup
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#5 Old 09-25-2005, 03:47 PM
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Wink

I appreciate the info everyone!

'We're ALL amateurs; It's just that some of us are more professional about it than others' - George Carlin
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#6 Old 09-25-2005, 07:46 PM
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I hope with this new chain design, this get rid of the screeching sound you usually get after having 20K on the car and trying to start it when it cold or humid. This has been a big problem on the Lexi over the years!
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#7 Old 09-25-2005, 08:39 PM
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Quote:
Originally Posted by preskev
I hope with this new chain design, this get rid of the screeching sound you usually get after having 20K on the car and trying to start it when it cold or humid. This has been a big problem on the Lexi over the years!
Funny, I've never had that experence with my 2001 ES 300.

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#8 Old 09-25-2005, 10:53 PM
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I also get the screeching sound on my Avy. However it only happens about once a week, and my timing belt IS due for replacement.
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#9 Old 09-26-2005, 01:16 AM
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never had that with any belt motor.


125 front wheel horsepower with major retard issues between 4500-5200RPM -
OD switched off, even when not in 3rd results in major power loss/rpm drop.
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#10 Old 09-26-2005, 01:52 PM
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The timing belt or chain synchronizes the valves with the pistons-well hidden under the engine cover--they don't slip, and if they do you will either barely run or crash the valves with the piston domes. That's why the timing belt is a replacement item since a failure is catastrophic to the engine unless designed to avoid valve interference. What might squeal is your accessory belt. That belt is visible from the exterior and has no specific replacement interval like a timing belt.

Jim
'06 Avalon Limited
'06 Lexus RX 400h

Last edited by retired00; 09-26-2005 at 01:54 PM.
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#11 Old 10-06-2005, 06:51 PM
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although most Toyota engines are non interference, so if the timing belt breaks it won cause any damage, you just won be able to drive until it is fixed.


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#12 Old 03-23-2006, 06:10 AM
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Question

Anybody know if the timing chain is a 'for life' item or is there a replacement interval like the previous TB?

Finally, will it run fine on regular gas? I noticed that the new Camry 3.5 will.

I appreciate the info.

'We're ALL amateurs; It's just that some of us are more professional about it than others' - George Carlin
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#13 Old 03-23-2006, 11:04 AM
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LEXUSFREAK,
The timing chain is for life, or until it breaks, whichever comes first.

My '05 Limited runs just fine on regular.
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#14 Old 03-23-2006, 01:31 PM
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TIming chain is for life item. It can break at anytime but normally you will be able to get 150k miles out of it. I have seen 22r series engines cahins break with 60k miles on them and I have seen them go well over 200k miles with the original chain. on those engines though it was not so much the chain that you had to worry about as it was the guides. when the guides break the chain starts slapping on the tiing cover and make a lot of noise. WHen that happens you need to get it replaced beofre it breaks because most of the tim if a chain breaks you are going to have catastrophic engine damage.
I would assume the case will be the same for the 3.5 that Toyota is using in everything now. Make sure you keep your oil changed and this will help prolong the life of the chain.

One more thing My mother had a 1979 Chevy Impala with a 350 in it when I was kid. She sold and it and the next owner had to replace the timing chain at about 300k miles when it broke. thenhe drove for another 100k miles before getting rid of it.

Nowadays there arent many people that even drive their car to 100k miles so you should be just fine.

Chris


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Last edited by Cyorke; 03-23-2006 at 01:33 PM.
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#15 Old 03-23-2006, 06:52 PM
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Timing Chain

They come with the timing chain, but not sure about the intervals, u might want to check with service in your nearest toyota dealership, that would be the best bet
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