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2006 4.7L Engine Noise

Discussion in '1st Gen Tundras (2000-2006)' started by interceptor84, Mar 8, 2018.

  1. Mar 8, 2018 at 5:17 AM
    #1
    interceptor84

    interceptor84 [OP] New Member

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    I'm hearing a noise in engine after it warms up that sounds like a rattle/tapping noise, but seems be coming from front of engine. Any ideas? Video linked below.

    https://youtu.be/LOP7zwjzVBA
     
  2. Mar 9, 2018 at 4:57 AM
    #2
    zombie

    zombie New Member

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    I notice videos always pick up the lifters making noise, but with the human ear they sound fine. I hear another noise in there, sounds like a timing belt flapping around, hitting the plastic cover.
     
    Filthyphil likes this.
  3. Mar 26, 2018 at 7:17 PM
    #3
    mooney

    mooney New Member

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    Funny you posted this, I just registered with this site to ask the same question. Mine doesn't seem to be as pronounced - more like a faint rattling sound - but I used the old hose trick to pinpoint the noise, and it's coming from under the front of the driver's side valve cover. I'm suspecting something to do with the VVT system.

    If you're not familiar with the hose trick, cut a short piece of garden hose (1.5 or 2 ft long) and hold one end up to your ear while you move the other end around the engine bay, touching various components. When you find the area the noise is coming from, it will be very pronounced through the hose.

    Give that a try and let's see if we have the same problem...
     
    tacoguybill likes this.
  4. Mar 27, 2018 at 5:27 AM
    #4
    zombie

    zombie New Member

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    I have a stethoscope hooked to a hose, talking small fuel line size. I have another piece of hose taped to a coat hanger so I can aim and get into tight places. There is really no other way to pinpoint a noise except standing there scratching your head.
     
  5. Mar 27, 2018 at 5:43 AM
    #5
    interceptor84

    interceptor84 [OP] New Member

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    I ended up buying an automotive stethoscope. The noise is most prominent on the flange that goes into the water pump. Im fairly certain at this point the scrapping/rattle noise is a bad water pump bearing. Doing a whole timing and water pump kit next weekend.
     
  6. Mar 29, 2018 at 4:36 AM
    #6
    zombie

    zombie New Member

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    I listened again, and that's what it sounds like.......does the fan have any movement? I use Aisin water pumps, and Gates belts
     
  7. Mar 29, 2018 at 4:50 AM
    #7
    interceptor84

    interceptor84 [OP] New Member

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    I ran it a week ago for a few minutes without the drive belt to rule out fan and idler pully as the source of the noise. It still made the sound which further solidified my thought that its the water pump. I picked up a gates water pump and timing kit. It has all the components to do the job right.
     
  8. Mar 29, 2018 at 5:08 AM
    #8
    zombie

    zombie New Member

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    Nothing wrong with Gates pumps, I use those if I can't find Aisin. Sounds like your on the right track.....when you get down to the belt, you can always run it again before taking the belt off to make sure. Most likely your problem. I did read something about an air pump noise on the second gens, so keep that in mind just in case.
     
  9. Mar 29, 2018 at 5:12 AM
    #9
    interceptor84

    interceptor84 [OP] New Member

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    Will do, thanks!
     
  10. Apr 25, 2018 at 6:05 AM
    #10
    interceptor84

    interceptor84 [OP] New Member

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    Just an update on this. Put the new waterpump and timing belt in Noise gone! The old pump had more play than a playground in it.
     
    tlswift likes this.
  11. Jul 22, 2018 at 4:19 PM
    #11
    Tebdanner

    Tebdanner New Member

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    Mine makes the same noise... 110,000 miles... when the accompressor comes on it stops... ticks like crazy with a load while on the road....
     
  12. Jul 22, 2018 at 4:27 PM
    #12
    Tebdanner

    Tebdanner New Member

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    Won’t let me upload my video.
     
  13. Aug 9, 2018 at 3:58 AM
    #13
    edwardsplus3

    edwardsplus3 New Member

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    I have a 2004 Tundra with the 4.7 and when I am towing I get a ticking also. Is it a possible exhaust leak?
     
    tlswift likes this.
  14. Jan 11, 2019 at 1:34 PM
    #14
    tlswift

    tlswift New Member

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    just a ARE tonneau cover
    I've got a 2006 Tundra Limited that makes what sounds like a loud (yes very loud) ticking noise. Never had the issue till I let the truck sit for 2-3 weeks. Went out to crank it up and that is when the noise started. Have used Mobil 1 or synthetic oil and good filters (Mobil 1 / K&N / Royal Purple) since buying it in 2012.

    Have diagnosed it as far as I know how, but here is what has been done:

    Checked exhaust for leaks - passenger side - found none
    Used a stethascope and found more of a "tapping" noise on passenger side valve train - nothing on drivers side at all
    Pulled valve cover and everything looks good there with the VVTI
    Pulled cam tower timing belt covers - both sides - timing belt looks new. Got into Toyota webpage and Service Records show timing belt & water pump replaced in Nov 2012 at 103,000 miles. It has only 131,500 now.
    Pulled coils one by one on passenger side to see if load change (no firing on that cylinder) would change noise level for possible piston issues - nothing

    Not saying it is not be a leak, but just REAL LOUD all the time - hot / cold. Sounds increases as you rev it up as well

    Some Toyo mechs say it may be tensioner(s) for timing belt - as I saw nothing on the Service Report to say they changed them out - yet that seems to be a one time fix all - but was done by a Toyo Dealer - so who knows. Can't get to tensioners without removing water pump and host of other stuff in front of them - so not wanting to pull it all apart right now.

    Took it to a local mechanic / shop who did a quick hear of it - and they state it sounds like them to be piston slap. Suggested I call a Toyo Dealer - as we don't have one within 50 miles - and talked to a mech there who could / would not diagnose over phone. Told him what my mech said and he didn't think with such few miles and sound all the sudden was piston slap. Another Toyo mech on FB said it could be piston wrist pin issue, but would not the unloading of the piston by taking the coil off that hole - then not make a noise? Can't get it into another local shop until next Thursday and no way to drive it to a Toyo Dealer - would need to tow it.

    Any more ideas?
     
  15. Jan 11, 2019 at 1:36 PM
    #15
    tlswift

    tlswift New Member

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    just a ARE tonneau cover
    Did you replace the tensioners as well?
     

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