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Acceleration - Does this sound normal?

Discussion in '3rd Gen Tundras (2014+)' started by BuckWallace, Jan 5, 2019.

  1. Jan 5, 2019 at 6:03 PM
    #1
    BuckWallace

    BuckWallace [OP] Ball don't lie.

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    I was out driving today and noticed an odd sound under acceleration when I was merging onto the freeway. After I got home I decided to take it out again and do some runs to see if I could duplicate the sound. Right around 4,000 RPMs under hardish acceleration I can hear a "whining" noise (you can hear it in the video right around 10 seconds). It seems to only do it under load as I tried to duplicate it just putting it in 2nd and revving it up to 4k and I couldn't hear it. I may just be paranoid, but I just had my engine opened up (8,800 miles) to re-seal the cam towers, and now I'm hearing this when I swear I never heard it before.

    https://youtu.be/t1J04a1z_sc

    Edit: Added this second clip since you can hear the noise in question a bit better. Listen around the 9 second mark.

    https://youtu.be/ycFH1YSbmIE
     
    Last edited: Jan 5, 2019
    SR5 AZUL likes this.
  2. Jan 5, 2019 at 6:13 PM
    #2
    15Yota

    15Yota New Member

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    You can’t really hear the whine, but yes it’s normal. Mine does it too.
     
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  3. Jan 5, 2019 at 6:25 PM
    #3
    BuckWallace

    BuckWallace [OP] Ball don't lie.

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    Maybe it's not so much a "whine" as it is a more intense "ticking". I don't know...it's probably me being paranoid but I'm at the dealer now and am going to ask to drive another one.
     
  4. Jan 5, 2019 at 6:27 PM
    #4
    15Yota

    15Yota New Member

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    That’s a good idea. I’m not a Toyota mechanic, just because mine does it too doesn’t mean it should lol. But I do remember seeing a thread about this very same noise you describe and everyone was saying it’s normal. My truck actually makes a faint turbo whine noise.
     
  5. Jan 5, 2019 at 7:43 PM
    #5
    BuckWallace

    BuckWallace [OP] Ball don't lie.

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    So I just went to the dealer and drove a new Tundra they had on the lot. The SR5 I drove sounded nowhere near what mine now sounds like. They suggested I take it in on Monday and have the tech that did the cam tower reseal on mine ride with me. If he tries to say it's normal I'll ask him to take me for a ride in any of their new Tundras and duplicate the sound for me. I was ready to quit worrying about my cam tower job but this has renewed my uneasiness. :frusty:
     
  6. Jan 5, 2019 at 7:45 PM
    #6
    15Yota

    15Yota New Member

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    Damn man. Well hopefully it’ll check out fine. That kind of stuff will make me lose sleep.
     
  7. Jan 5, 2019 at 7:48 PM
    #7
    BuckWallace

    BuckWallace [OP] Ball don't lie.

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    Yeah, ask my wife... She's about to kill me because I'm talking about it so much.
     
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  8. Jan 5, 2019 at 7:48 PM
    #8
    SiberianTundra

    SiberianTundra New Member

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    what engine 5.7 or 4.6
     
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  9. Jan 5, 2019 at 7:55 PM
    #9
    BuckWallace

    BuckWallace [OP] Ball don't lie.

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    5.7. I was 99% sure I never heard this noise before my cam tower job, and driving the new one tonight pretty much confirmed that.
     
  10. Jan 5, 2019 at 8:44 PM
    #10
    Philogynist

    Philogynist New Member

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    The Acoustic Control Induction System (ACIS) automatically adjusts the intake runner length hence the sound you are experiencing.
     
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  11. Jan 5, 2019 at 9:02 PM
    #11
    BuckWallace

    BuckWallace [OP] Ball don't lie.

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    Thanks for the explanation. What does that mean, though? As in, why would I suddenly hear that on mine after a cam tower job and never before, and not on a new Tundra on the lot?

    Edit: So I just looked that up and it says it's meant to reduce engine roar? Mine seems to have increased engine roar since the repair, so I wonder if somehow it got disabled?
     
    Last edited: Jan 5, 2019
  12. Jan 5, 2019 at 9:56 PM
    #12
    ColoradoTJ

    ColoradoTJ jberry813fanclub.com Staff Member

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    How is your idle?

    Wonder if you have an intake leak and it’s causing the whistling sound? If that is true, it will only get worse.

    You can test this theory out with some starter fluid. Spray around the intake seal. If your idle changes, you sir have a leak.
     
  13. Jan 5, 2019 at 10:01 PM
    #13
    BuckWallace

    BuckWallace [OP] Ball don't lie.

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    Idle and normal driving sound completely normal. Even normal acceleration sounds normal (like it did before the repair, anyway), but when I get on it and it reaches 4k RPMs I get the noise. Would everything else sound normal if I had an intake leak?
     
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  14. Jan 5, 2019 at 10:05 PM
    #14
    ColoradoTJ

    ColoradoTJ jberry813fanclub.com Staff Member

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    Everything would sound normal at idle.

    When the engine really starts building vacuum, this may be your squeal.

    Try the starting fluid trick. Short bursts.
     
  15. Jan 5, 2019 at 10:06 PM
    #15
    Vizsla

    Vizsla Dinkus

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    ACIS...
     
  16. Jan 5, 2019 at 10:29 PM
    #16
    BuckWallace

    BuckWallace [OP] Ball don't lie.

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    You can hear it in this video a little bit better. Right around the 9 second mark is where it's most pronounced.
    https://youtu.be/ycFH1YSbmIE
     
  17. Jan 5, 2019 at 10:31 PM
    #17
    ColoradoTJ

    ColoradoTJ jberry813fanclub.com Staff Member

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    I doubt that is an intake leak.
     
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  18. Jan 5, 2019 at 11:50 PM
    #18
    Stewie

    Stewie New Member

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    It’s the V-TEC kicking in yo!!!
     
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  19. Jan 6, 2019 at 4:58 AM
    #19
    Philogynist

    Philogynist New Member

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    Take a look at this video. It may give you an idea on what is happening inside your engine.
    https://youtu.be/_3Hd-qj0VAg
     
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  20. Jan 6, 2019 at 5:09 AM
    #20
    Alloutdrs1

    Alloutdrs1 New Member

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    Did they do an oil change as be part of the repair? When I got my truck back they didn't and I was half way down on the dipstick. Plus they use cleaners to prep the gasket area, maybe those are mixing with what oil you have left and thinning it out some more causing the tapping noise. Either you or have the dealer change the oil and see if things improve. You need to get that oil out of there anyways, I had gasket debris in mine for a few oil changed.
     
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  21. Jan 6, 2019 at 10:11 AM
    #21
    BuckWallace

    BuckWallace [OP] Ball don't lie.

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    I'm not sure if they changed the oil, but I did check the oil level after I got the truck back and it looked good.
     
  22. Jan 6, 2019 at 5:41 PM
    #22
    SR5 AZUL

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    So like and the end the sound gets louder?
     
  23. Jan 6, 2019 at 5:43 PM
    #23
    SR5 AZUL

    SR5 AZUL TRD

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    I’m ganna check mine tomorrow see if mine does it. I’ll get on the highway and get after it. When to you hear it? After 4000rpms?
     
  24. Jan 6, 2019 at 5:44 PM
    #24
    BuckWallace

    BuckWallace [OP] Ball don't lie.

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    Yeah, at the 9 second mark in the 2nd video you can hear it the most.
     
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  25. Jan 6, 2019 at 6:03 PM
    #25
    SR5 AZUL

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    Since my cam tower fix I’ve towed my trailer across the mountains of BC and at times my engine was screaming and didn’t notice that noise, but I still want to check it out tomorrow if it does it.
     
  26. Jan 6, 2019 at 6:07 PM
    #26
    BuckWallace

    BuckWallace [OP] Ball don't lie.

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    I mean I'm used to the ticking "diesel" noise our engines make, but this is definitely new. Also, like I mentioned, I went and drove a new one on the lot last night and it sounded nothing like mine does now, so I don't think I'm just going insane.
     
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  27. Jan 7, 2019 at 2:05 PM
    #27
    BuckWallace

    BuckWallace [OP] Ball don't lie.

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    Just took the tech for a ride and he said it's definitely not normal. He thinks it's either a vibrating heat shield (apparently he had to bend one to get to a bolt) or possibly a lifter (please not be a lifter), so let's just hope it's a heat shield.
    :fingerscrossed:
     
  28. Jan 7, 2019 at 2:40 PM
    #28
    Alloutdrs1

    Alloutdrs1 New Member

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    Hopefully not a lifter, they could off got some debris in there that went to the lifters though.
     
  29. Jan 7, 2019 at 3:01 PM
    #29
    BuckWallace

    BuckWallace [OP] Ball don't lie.

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    Well, it's not the heat shield and they want to keep it... Sounds like it's getting opened up again. Toyota shot me down when I asked for an extended warranty but having it opened up twice now is really pissing me off.
     
  30. Jan 8, 2019 at 8:55 PM
    #30
    BuckWallace

    BuckWallace [OP] Ball don't lie.

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    Update today: I got a call from the service manager today, and he said the tech tore down the right side of my engine again. He took off the cam shafts and lifters, then found a "pocket of air" in one of the valves. He said that doesn't cause any damage (whatever, I'll take his word for it for now), but when he put it all back together and tested it the truck was still making the sound. At this point the service manager said they're having someone from Toyota come out tomorrow to go over it, but it sounds like it's now going to need to be torn down for a THIRD TIME.

    I'm honestly feeling worse and worse about this whole thing and don't even want to keep this truck. What would you guys do in my situation? It's probably going to be a battle for any kind of compensation.
     

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