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Engine noise at idle

Discussion in '5th Gen 4Runners (2010+)' started by 2018newbie4rnr, Oct 1, 2020.

  1. Oct 1, 2020 at 8:09 PM
    #1
    2018newbie4rnr

    2018newbie4rnr [OP] New Member

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    Hello all,
    I am recently retired and as a retirement gift to myself I bought a 2018 4Runner.
    Was always a Toyota fan having several highlanders and finally bought my dream runner.

    so far it has been great, however, I have noticed an engine noise, almost sounds like a main bearing rattle, most noticeable at idle and slow acceleration. It has 23k miles and I love driving it.

    Was hoping for any history or info that could calm my worries about this noise.

    any info would be greatly appreciated

    Bernie
     
    TRDPro916 likes this.
  2. Oct 1, 2020 at 8:34 PM
    #2
    Mtbpsych

    Mtbpsych New Member

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    The 4.0L has a known “knock” that can be very noticeable, and also a known engine whine. I haven’t heard of bearing issues with these engines. If you’re really worried, take it to the dealer. You have a 3 yr/36k bumper to bumper warranty, and a 5 yr/60k warranty.
     
    a47chuck, Toy4X4 and Bob like this.
  3. Oct 2, 2020 at 6:34 AM
    #3
    2018newbie4rnr

    2018newbie4rnr [OP] New Member

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    Many thanks for the reply,
    Dealer visit next week,
    Thanks again,
    B
     
    toy33 likes this.
  4. Oct 3, 2020 at 7:58 AM
    #4
    Matt83

    Matt83 New Member

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    They are noisy engines
     
  5. Oct 3, 2020 at 8:53 AM
    #5
    peter2772000

    peter2772000 New Member

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    GTR high and low beams, Victory rear carrier
    The engine in my 2019 with 5000 miles is noisier than the engine in my FJ with 140k miles
     
  6. Oct 3, 2020 at 11:46 AM
    #6
    Joekader

    Joekader New Member

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    Pump up the volume on your favorite music
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  7. Oct 3, 2020 at 12:21 PM
    #7
    4runningMan

    4runningMan New Member

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    Try a tank of premium fuel and see if it makes a difference. It’s probably nothing. These engines are noisy.
     
  8. Nov 19, 2020 at 7:16 PM
    #8
    gmoliver

    gmoliver New Member

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    I’m sure glad I found this form. 2020 Limited with 1000 miles. Yes it has a “knock” and is noisy for a new engine. But this is my first 4Runner and was not familiar with the engine sounds. Seems to run great and drives well. Mentioned that on cold start up tach goes up to 1900 and begins to come back down to 1400. With over 6 qts of oil perhaps the engineering is to get the mechanicals of the engine covered in the oil quicker?
     
    Thatbassguy likes this.
  9. Nov 19, 2020 at 8:14 PM
    #9
    Thatbassguy

    Thatbassguy New member? Really??

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    Could be.

    The knock or tick is apparently caused by the lifters.
     
  10. Nov 20, 2020 at 6:22 AM
    #10
    gmoliver

    gmoliver New Member

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    That’s what it sounds like-lifters
     
    Thatbassguy likes this.
  11. Nov 20, 2020 at 6:29 AM
    #11
    canadian.bacon

    canadian.bacon H9 halogen is the best led bulb

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    yes, it will rub
    this is the noisiest engine i ever had, louder than a hemi, louder than the old trusty V8 in my Roadmaster :)
     
    Thatbassguy likes this.
  12. Nov 20, 2020 at 7:11 AM
    #12
    MeefZah

    MeefZah Curmudgeonly

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    California, rest in peace
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    Assholes call travel "overlanding"
    Just another vote for "noisy engine; nothing wrong". We've had 4 5th gen 4Rs and 1 2nd gen Taco with the same engine, they all sound....errr.... rough...
     
    Thatbassguy likes this.
  13. Nov 20, 2020 at 8:01 AM
    #13
    Trail Runnah

    Trail Runnah New Member

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    I bought mine used with just under 80k, and the first 6 months I owned it I was CERTAIN that there was something wrong internally with the motor. Did a ton of research, and everyone said it's normal. I even posted some videos, and had my buddy who's a Yota tech listen to it. Normal, everyone said.

    I still think it sounds like it's about to shoot a rocker through the hood, but whatever. Just another 4R quirk, I guess.

    Honestly though, I am VERY surprised that Toyota engineers thought this was okay, as far as NVH goes. Not to mention all the engine noise in the cabin, I try to not to take mine over 2k rpm much so I don't have to hear the damn thing.

    Yes it's reliable, but IMO the motor is by far my least favorite part of this vehicle. I've owned a Ford, a Jeep, numerous GMs, and a Volvo, and this is by far my least favorite engine. The runner up is probably the Ford 4.6 (single cam) V8 in the Cougar. It had a pathetic power output, but at least it was so smooth and quiet you couldn't tell it was running.
     
    Thatbassguy likes this.
  14. Nov 20, 2020 at 8:18 AM
    #14
    Thatbassguy

    Thatbassguy New member? Really??

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    I agree that the tick is annoying. The 4.7 V8 in my '03 was so quiet. I loved that motor! Normal or not, it makes it sound like shit.
     
    Trail Runnah likes this.
  15. Nov 20, 2020 at 8:23 AM
    #15
    Toffees

    Toffees Stuff and things

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    I love the tap of the lifters. It's a very comfortable normal for a sometimes busy life.
     
    Thatbassguy likes this.

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