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4.7 timing belt

Discussion in '1st Gen Tundras (2000-2006)' started by sidewinder81, Jun 20, 2017.

  1. Jun 20, 2017 at 5:24 PM
    #1
    sidewinder81

    sidewinder81 [OP] New Member

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    I am new to toyota, bought a 2004 tundra with a 4.7L , have read that the timing belt has a definite life span. How many miles is the life span, how often do you change it?
    Thanks, Tom
     
  2. Jun 20, 2017 at 7:24 PM
    #2
    Agitated1

    Agitated1 Newish Member

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    I changed the timing belt on my 05 Tundra at 118,000 miles in 2014. I believe toyota recommends changing it at 90000 miles.
     
  3. Jun 21, 2017 at 5:16 PM
    #3
    chunk

    chunk New Member

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    Did mine with h2o pump at 75K miles.
     
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  4. Jun 22, 2017 at 10:26 PM
    #4
    AaronK

    AaronK New Member

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    90k or 7 years
     
  5. Jun 23, 2017 at 9:50 AM
    #5
    Vector W8

    Vector W8 Old guy with a lot of expensive habits.

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    If you have a 4.7 you may have a bigger problem....
     
  6. Jul 13, 2017 at 2:41 PM
    #6
    mtntop

    mtntop New Member

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    I changed mine at 90 and 180k, in both instances the old belt looked very good, I wonder if it would have made it another 200k??? LOL
     
  7. Jul 13, 2017 at 3:51 PM
    #7
    ToyotaTundraMike

    ToyotaTundraMike Not A New Member

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    How so?
     
  8. Jul 13, 2017 at 4:10 PM
    #8
    pwkeeland

    pwkeeland New Member

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    I had mine changed at 117k. It probably didn't need to be changed but from what I read, I wanted it done before I purchased the truck.
     
  9. Jul 13, 2017 at 5:05 PM
    #9
    BestGen

    BestGen Huge Member

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    Fabtech 2.5" coilovers, BFG KO2 34/10.5/17, 17x7.5 TE wheels, add-a-leaves, 4.56 gears, Rhino-lined
    My truck has had two timing belt changes. First at 100K and then at 210K. The original owner told me that both times the belt looked new. I wonder what's the most miles someone's put on one. Has anyone ever heard of a timing belt breaking? If so, at what mileage? :cheers:
     
  10. Jul 13, 2017 at 5:23 PM
    #10
    kenomouth64

    kenomouth64 New Member

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    Hold the Line! If you are not holding the line, abandon your ship. Destruction is inevitable without more to hold the line!
    I believe the interval is every 90,000 Miles. I recommend doing the following in conjunction with the timing belt:
    Water pump
    Cam seals
    Tensioner
    Idler Pulley (for the timing belt)

    They sell a great kit on Amazon, it uses all Toyota parts. I am not sure bout the 4.7L though. I bought the kit for the 5VZ-FE (3.4L).
     
    Bear and Phillipk98 like this.
  11. Jul 19, 2017 at 5:30 PM
    #11
    Vector W8

    Vector W8 Old guy with a lot of expensive habits.

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    Should be a 4.6L
     
  12. Jul 19, 2017 at 6:10 PM
    #12
    ToyotaTundraMike

    ToyotaTundraMike Not A New Member

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    Not on a 1st gen
     
    BuckWallace, Amasailor30 and BestGen like this.
  13. Jul 19, 2017 at 6:27 PM
    #13
    Morgan51

    Morgan51 New Member

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    My dad's 2003 broke at 175,000 miles, one of the pulleys completely busted, it wasn't even the belt. He had just bought the truck about 6 months prior so not sure if the original owner ever changed it out or not.. assuming they didn't since it just broke lol. On my first gen I had, I didn't change it until it had 200k miles. I changed it right after his broke just for safe measure. Mine still looked fairly new when replaced
     
    BestGen likes this.
  14. Jul 19, 2017 at 6:50 PM
    #14
    Festerw

    Festerw New Member

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    I bought the kit for my 4.7, Aisin TKT-021. You might as well add a thermostat, thermostat gasket, serpentine belt and coolant to the list for the job.

    My mechanic installed it as said he was impressed with how complete the kit was for the money.

    No idea if mine had ever been changed but it looked good at 168k.
     
  15. Jul 20, 2017 at 8:40 AM
    #15
    BestGen

    BestGen Huge Member

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    Fabtech 2.5" coilovers, BFG KO2 34/10.5/17, 17x7.5 TE wheels, add-a-leaves, 4.56 gears, Rhino-lined
    Wow! 200K and still going strong! That's the most I've heard of so far. Still haven't heard of one snapping and destroying an engine. I'm sure they're out there... :notsure:IMG_1117.jpg
     
  16. Jul 20, 2017 at 9:07 AM
    #16
    15whtrd

    15whtrd Tundra fanboy/lover....dryhumper...

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    TRD Pro suspension, 20% ceramic tinted windows, charcoal filter delete, aFe drop in pro s dry air filter, TRD airflow accelerator, TRD oil fill cap, TRD 18 psi radiator cap, BDX Bullydog tuner, Weathertech floor mats, rear seat fold down mod, Tyger soft tonneau cover, Linex with uv protection, TRD swaybar, TRD center caps, TRD Pro grille insert, Real truck tailgate seal, Pop-n-lock tailgate actuator, rear diff breather relocate.
    I'm due for a timing belt change on my Sequoia. Actually overdue. I read something about possible valve relief in the Pistons so that if the belt does break it won't destroy everything it'll just shut off. Thoughts?
     
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  17. Jul 20, 2017 at 9:14 AM
    #17
    BestGen

    BestGen Huge Member

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    I've never heard of this. If true it would be great. That would make it a 'non-interference' engine...? Which isn't the case afaik. :cool:
     
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  18. Jul 21, 2017 at 1:28 AM
    #18
    Morgan51

    Morgan51 New Member

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    We replaced it with no major issues. We did have a set back at first trying to get the timing back to where it was supposed to be as the pulley busting threw it all off. Once we got it all back together I don't think I had ever been so happy to hear a truck start in my entire life :rofl: With our setbacks it was a sunrise to well past sunset job. Luckily when we did it the second time around on my truck it took about 6 hours taking our time :thumbsup:
    I miss my first gen from time to time :(
     
    BestGen likes this.
  19. Jul 21, 2017 at 8:03 AM
    #19
    BestGen

    BestGen Huge Member

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    Fabtech 2.5" coilovers, BFG KO2 34/10.5/17, 17x7.5 TE wheels, add-a-leaves, 4.56 gears, Rhino-lined
    So when the pulley broke it didn't wipeout the valvetrain? The engine was fine afterwards? Interesting... I was under the assumption:tinfoilhat:(and alot of other ppl)that a pulley or T-belt break meant catastrophic failure. Either a rebuild or replacement was in order. Good news!:cheers:


    Edit: Maybe there is some validity to the rumor about 'piston valve relief' that 15whtrd mentioned earlier...
     
    Last edited: Jan 5, 2018
    Amasailor30 and 15whtrd like this.
  20. Aug 2, 2017 at 12:24 PM
    #20
    Bjamin

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  21. Aug 2, 2017 at 12:28 PM
    #21
    Bjamin

    Bjamin New Member

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    We had a 2003 Sequoia got 11 years and 268,000 miles on the original timing belt! Driven by my wife ( slowpoke)
    We were extremely lucky! I do not recommend testing yours the same way...
     
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  22. Aug 2, 2017 at 12:51 PM
    #22
    ARamirez73

    ARamirez73 JUST A HOBO RIDIN' THEM RAILS TO ANYWHERE

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  23. Aug 2, 2017 at 1:13 PM
    #23
    Hasteen

    Hasteen To be continued...

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    228,800 and counting on the original belt. 2004 DC 4.7L :D
     
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  24. Aug 2, 2017 at 1:54 PM
    #24
    tye

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    I have a 2002 and I love it as much as one can. I drive it to work every day. Changed timing belt at 80k. I'm at 160k and wondering if I should change it now myself.
    I don't plan on giving it up EVER.
     
  25. Nov 12, 2017 at 7:52 AM
    #25
    OilfieldTrash77

    OilfieldTrash77 New Member

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    I have a 04DC Limited w-288,950hwy miles.I purchased from my Company. It used to be a Hotshot/Shop truck. And was covered under a Fleet care system. The office it was assigned to has closed an there are no service records available.
    My main concern is if the Timing belt has been changed or not. Id like to think it has. Is there a way i can visually tell? Thanks in advance.
     
  26. Nov 12, 2017 at 8:15 AM
    #26
    Jmitchellfly

    Jmitchellfly New Member

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    OilfieldTrash7 when I had mine changed at the dealership they put a small decal on top of the fan shroud that said timing belt changed at 105,000 miles.
     
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  27. Nov 12, 2017 at 9:58 AM
    #27
    Festerw

    Festerw New Member

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    The kit my mechanic used had a similar thing, it's on the underside of the hood.

    If you register with the Toyota owners website you can see the service history from the dealers, may not give you any info but can't hurt.
     
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  28. Nov 13, 2017 at 6:03 PM
    #28
    OilfieldTrash77

    OilfieldTrash77 New Member

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    Thanks, talking to an owner yesterday. We came to the conclusion that they used the truck for a good year before I bought it. And I put 60k on it, so... If the intervals are 90k im probably over due any way.
    Now, I looked at the Ebay "Kits" and they vary from $80 to $300+ is there a recommended supplier/brand?
     
  29. Nov 13, 2017 at 6:47 PM
    #29
    Festerw

    Festerw New Member

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    This kit is a great one
    https://www.amazon.com/gp/aw/d/B008EEYWKI/ref=ya_aw_oh_bia_dp?ie=UTF8&psc=1

    Then add a new thermostat, gasket, serpentine belt, and 2 gallons of coolant. Then you'll be good for another 90k.
     
  30. Nov 17, 2017 at 10:50 AM
    #30
    BestGen

    BestGen Huge Member

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    Fabtech 2.5" coilovers, BFG KO2 34/10.5/17, 17x7.5 TE wheels, add-a-leaves, 4.56 gears, Rhino-lined
    ^This is a great kit at a great price. It's an Aisin brand kit which is a top quality OE part.

    Edit: Aisin was started by and is owned by Toyota. :thumbsup:
     
    Last edited: Aug 10, 2018
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