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2018 Tacoma SR5 engine tick / rattle

Discussion in '3rd Gen. Tacomas (2016+)' started by phoenixpiole, Aug 13, 2018.

  1. Aug 13, 2018 at 2:25 PM
    #1
    phoenixpiole

    phoenixpiole [OP] Well-Known Member

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    Need some advise, I just purchased a 2018 Toyota Tacoma SR5 with the 3.5L V6 and 6 speed automatic transmission. I’ve noticed since about the 3rd day I’ve owned the truck that there seems to be a metallic type ticking sound while accelerating both when the engine is cold and hot. I hear a ticking / knocking at idle after warm up which I’m reading are the self cleaning injectors but the sound never stops although I haven’t let it idle long enough for the injectors to completely cycle which I also read can last up to 10 minutes.

    Any way the sound at idle seems to speed up but lessen in noise a bit with acceleration from a stop, most noticeable at around 1000-2000 revs, can’t hear it at higher speeds on the highway, ECT and pressing the gas harder doesn’t help, best way I can describe it is a diesel like sound or an engine that needs valve adjustment, I’ll try to get audio up later.

    The truck only has 400 miles on the odometer.
     
  2. Aug 13, 2018 at 2:32 PM
    #2
    quest36x

    quest36x Active Member

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    Sounds like a vacuum pump.
     
  3. Aug 13, 2018 at 2:36 PM
    #3
    shakerhood

    shakerhood Well-Known Member

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    The fuel injection cleaning cycle comes on at idle, you may be hearing that.
     
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  4. Aug 13, 2018 at 2:36 PM
    #4
    phoenixpiole

    phoenixpiole [OP] Well-Known Member

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    Did experience this noise with your 2016 SR5?
     
  5. Aug 13, 2018 at 2:37 PM
    #5
    quest36x

    quest36x Active Member

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    No... but multiple experiences with 2016s and 2017 Tacomas in my history as a service advisor for Toyota.
     
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  6. Aug 13, 2018 at 2:39 PM
    #6
    phoenixpiole

    phoenixpiole [OP] Well-Known Member

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    Ive heard the fuel injection system cleaning at idle, it sounds more or less like a sewing machine, I’m thinking the sound at idle that never goes away is something else. It’s also most noticeable while accerlating which leads me to believe it’s the vacuum pump
     
  7. Aug 13, 2018 at 2:40 PM
    #7
    quest36x

    quest36x Active Member

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    It may not be the vacuum pump, but I warrantied more than 10 of them for that description... none of them ever came back.... it is not a diagnosis, just from my experiences....
     
  8. Aug 13, 2018 at 2:44 PM
    #8
    Clearwater Bill

    Clearwater Bill Sometimes when I close my eyes, I can't see.

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    Take it in and find out what it is.

    Its what warranties are for.
     
  9. Aug 13, 2018 at 2:45 PM
    #9
    phoenixpiole

    phoenixpiole [OP] Well-Known Member

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    Is there a TSB out yet for the vacuum pump for the 2018? Of the trucks that were diagnosed with this problem were they all 2016s and 17s or were there 18s too?

    I’ve also noticed the transmission tends to stumble and shudder on the highway around 40-55mph when feathering the gas pedal. The problem goes away when I reach higher speeds, I don’t know if these are related maybe?
     
  10. Aug 13, 2018 at 2:46 PM
    #10
    LivinOnEdge

    LivinOnEdge ¯\_(ツ)_/¯

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    Sounds like what I have going on. Sounds like the engine is suffocating and then catches its breathe for a half second.
     
  11. Aug 13, 2018 at 2:48 PM
    #11
    Clearwater Bill

    Clearwater Bill Sometimes when I close my eyes, I can't see.

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    There is a TSB for that
     
  12. Aug 13, 2018 at 2:49 PM
    #12
    quest36x

    quest36x Active Member

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    I'm unsure of any current TSB's with 2018 Tacomas as I no longer work at a Toyota dealership.
     
  13. Aug 13, 2018 at 2:52 PM
    #13
    phoenixpiole

    phoenixpiole [OP] Well-Known Member

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    Does yours have the engine ticking at low speeds or the transmission shuddering / stumbling?
     
  14. Aug 13, 2018 at 2:54 PM
    #14
    phoenixpiole

    phoenixpiole [OP] Well-Known Member

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    I’m going to take it to the dealership this week but I’m afraid I’ll just get the run around and the “it’s normal” or “we couldn’t duplicate the noise” answer.
     
  15. Aug 13, 2018 at 3:00 PM
    #15
    quest36x

    quest36x Active Member

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    Predator Step Bars.

    Offer to wait with the vehicle, and ride with the technician to ensure you can point out the noise as you hear it. My $.02.
     
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  16. Aug 13, 2018 at 3:02 PM
    #16
    LivinOnEdge

    LivinOnEdge ¯\_(ツ)_/¯

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    No, just sounds like an exhaust leak when I accelerate some times after the trucks driven a few miles.
     
  17. Aug 13, 2018 at 3:08 PM
    #17
    Clearwater Bill

    Clearwater Bill Sometimes when I close my eyes, I can't see.

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    I see this type of response a lot. If this is a prevalent issue, why bother buying something with a warranty?

    Not picking at 'you', just a comment in general. Because so many folks use the 'it comes with a good warranty' line as part of the purchase rationalization.
     
  18. Aug 17, 2018 at 10:22 PM
    #18
    wcoffman

    wcoffman Member

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    Mine (2018 TRD Sport 4x4 V6 6sp AT) made the same noise until I had about 2500 miles on it. Sounded like lifter tick/sewing machine. If I listen closely I think I can still hear similar noise but nothing like prior to 2500 miles. Not sure what it was but it's much improved/gone now.
     
  19. Aug 17, 2018 at 11:12 PM
    #19
    Cpngo

    Cpngo Well-Known Member

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  20. Aug 18, 2018 at 7:57 AM
    #20
    phoenixpiole

    phoenixpiole [OP] Well-Known Member

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    Thanks for the reply, so you’d hear the tick on acceleration from a stop and slow speeds or just at idle or both?

    I took my truck to the dealer a couple days ago they said they couldn’t duplicate the noise, I tried to point out the noise to the technician with me driving but he said it was normal or perhaps the direct injectors, although he could not hear anything at all.

    I test drove another ‘18 SR5 and it seemed to have the same noise with it both at idle and acceleration, perhaps ever so slightly quieter though with the brand new one, it had 11 miles on the odo.

    I’ll still try to get some audio up for everyone but it’s difficult to capture
     
    Last edited: Aug 18, 2018

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