1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site
    Quick Links: Gear oil question Unused firewall hole for power wire Budget Custom roof rack+light bar build by a complete dolt Wiring diagram for OEM 7 blade connector (tow package) Trying to identy what part is missing to replace Clutch wont disengage after full clutch replacement

4.0L V6 Cold Start Engine Knock, Noise, Possible Cause ???

Discussion in '2nd Gen. Tacomas (2005-2015)' started by tinker2, Feb 18, 2016.

Page 2 of 2
  1. Nov 28, 2018 at 4:56 AM
    #21
    Benny123

    #21
    Benny123 Kid from the late 70s

    Joined:
    Mar 2, 2018
    Member:
    #246042
    Messages:
    700
    Gender:
    Male
    First Name:
    Ben
    South Charlotte, NC
    Vehicle:
    2005 Speedway Blue Tacoma AC V6 TRD Off Road 4x4
    Replacing everything worn, broken, and rusted.
    Benny123, Nov 28, 2018
    #21
  2. Nov 28, 2018 at 5:38 AM
    #22
    craigs1

    #22
    craigs1 Well-Known Member

    Joined:
    Sep 9, 2017
    Member:
    #229508
    Messages:
    253
    Gender:
    Male
    Vehicle:
    2007 4Runner Limited, 4.0L
    I'd use a mechanic's stethoscope (around $20 and a good investment), and start by probing each serpentine belt idler pulley including the tensioner. Just touch the probe to each pulley's center bolt and listen. These are bolted directly to the engine and transmit noise when the bearing wears out.
     
    craigs1, Nov 28, 2018
    #22
  3. Nov 28, 2018 at 6:19 AM
    #23
    Benny123

    #23
    Benny123 Kid from the late 70s

    Joined:
    Mar 2, 2018
    Member:
    #246042
    Messages:
    700
    Gender:
    Male
    First Name:
    Ben
    South Charlotte, NC
    Vehicle:
    2005 Speedway Blue Tacoma AC V6 TRD Off Road 4x4
    Replacing everything worn, broken, and rusted.
    Would it make sense if it was the pulley if it was only 5 mins and only in cold temps? Fwiw all new pulleys and belt 6 months ago.
     
    Last edited: Nov 28, 2018
    Benny123, Nov 28, 2018
    #23
  4. Nov 28, 2018 at 11:22 AM
    #24
    craigs1

    #24
    craigs1 Well-Known Member

    Joined:
    Sep 9, 2017
    Member:
    #229508
    Messages:
    253
    Gender:
    Male
    Vehicle:
    2007 4Runner Limited, 4.0L
    When the new pulleys were installed, was a torque wrench used to tighten the bolts to factory specs? If not, too much torque on the bolts may damage the pulley bearings. Stethoscope will tell the story.
     
    craigs1, Nov 28, 2018
    #24
  5. Nov 28, 2018 at 1:40 PM
    #25
    Benny123

    #25
    Benny123 Kid from the late 70s

    Joined:
    Mar 2, 2018
    Member:
    #246042
    Messages:
    700
    Gender:
    Male
    First Name:
    Ben
    South Charlotte, NC
    Vehicle:
    2005 Speedway Blue Tacoma AC V6 TRD Off Road 4x4
    Replacing everything worn, broken, and rusted.
    Yes. So they would only make noise on cold days then.
     
    Last edited: Nov 28, 2018
    Benny123, Nov 28, 2018
    #25
  6. Nov 28, 2018 at 1:48 PM
    #26
    richiep

    #26
    richiep Well-Known Member

    Joined:
    Feb 7, 2014
    Member:
    #122487
    Messages:
    362
    Gender:
    Male
    First Name:
    Rich
    NY
    Vehicle:
    2006 Tacoma Access 4WD SR5
    Trd s/c 2.85 pully Walbro 255 f/p Urd stage 3 clutch Hurst core shifter Afe cai
    richiep, Nov 28, 2018
    #26
    Kolter45 and Benny123[QUOTED] like this.
  7. Nov 28, 2018 at 5:10 PM
    #27
    Armkb

    #27
    Armkb Well-Known Member

    Joined:
    Nov 15, 2008
    Member:
    #10781
    Messages:
    373
    Gender:
    Male
    Hudson Valley, New York
    Vehicle:
    09 TRD Sport DCLB
    Bilstein 5100, OME 885X, LR UCA, ARB/EL095R, ES LCA Rack & Sway Bar Bushings, Yellow Wire Mod, ABS Switch, TPMS Mod, Scanguage, Toyota Bed Mat, WeatherTech Floor Liners, Extang Trifecta Cover, Fumoto Drain Valve
    Gonna go out on a limb here. But every year around same time we hear of cold weather knocks, flutter, ticking etc. I too was plagued for years by some noise that seemed like it could only be heard in the cab when it was cold out. Never heard it under the hood or outside of vehicle. Searching here in TW I found my answer. Believe it or not it was the gasket on the air filter snorkel that is mounted in the passenger side fender. Once I double taped the snorkel the sound has not returned. Check out my audio clip. Good luck all!!
    https://m.youtube.com/watch?v=Xf6eA5kxe2k
     
    Armkb, Nov 28, 2018
    #27
  8. Nov 28, 2018 at 5:14 PM
    #28
    Armkb

    #28
    Armkb Well-Known Member

    Joined:
    Nov 15, 2008
    Member:
    #10781
    Messages:
    373
    Gender:
    Male
    Hudson Valley, New York
    Vehicle:
    09 TRD Sport DCLB
    Bilstein 5100, OME 885X, LR UCA, ARB/EL095R, ES LCA Rack & Sway Bar Bushings, Yellow Wire Mod, ABS Switch, TPMS Mod, Scanguage, Toyota Bed Mat, WeatherTech Floor Liners, Extang Trifecta Cover, Fumoto Drain Valve
    Same symptoms as mine to the tee.

    Edit:Never mind...just realized I just quoted my own post!!
    But it definitely was the gasket on the snorkel that was the source of the noise.
     
    Last edited: Nov 28, 2018
    Armkb, Nov 28, 2018
    #28
    motorgoat likes this.
  9. Dec 5, 2018 at 5:25 AM
    #29
    Fatmonk8

    #29
    Fatmonk8 Did anyone ever tell you you're my hero?

    Joined:
    Dec 8, 2017
    Member:
    #237952
    Messages:
    1,158
    Gender:
    Male
    First Name:
    Paul
    Delco, PA
    Vehicle:
    2019 SR5 Barcelona Red Taco 3.5 V6
    That is what I heard it could be as well, but my noise is more of a ting rattle, and after I drive it for a while and it warms up it goes away.
     
    Fatmonk8, Dec 5, 2018
    #29
  10. Jul 11, 2019 at 9:49 PM
    #30
    marckusewich

    #30
    marckusewich Member

    Joined:
    Jul 11, 2019
    Member:
    #299007
    Messages:
    6
    Gender:
    Male
    First Name:
    Marc
    Vehicle:
    2017 t4r trd pro
    Urd supercharger kit
    @Fatmonk8 you ever find out what the rattle was? My 17’ does the same thing at start up. If you put it in gear it rattles loud or if you turn the wheel but disappears after everything warms up it’s been driving me nuts
     
    marckusewich, Jul 11, 2019
    #30
  11. Jul 12, 2019 at 4:07 AM
    #31
    Fatmonk8

    #31
    Fatmonk8 Did anyone ever tell you you're my hero?

    Joined:
    Dec 8, 2017
    Member:
    #237952
    Messages:
    1,158
    Gender:
    Male
    First Name:
    Paul
    Delco, PA
    Vehicle:
    2019 SR5 Barcelona Red Taco 3.5 V6
    It was my heat shield
     
    Fatmonk8, Jul 12, 2019
    #31
    Kolter45 likes this.
  12. Jan 9, 2025 at 7:30 PM
    #32
    motorgoat

    #32
    motorgoat Active Member

    Joined:
    Jul 26, 2014
    Member:
    #134749
    Messages:
    28
    Gender:
    Male
    Chesapeake, Virginia
    Vehicle:
    2010 Prerunner

    Hey I know this is an old post, but could you provide a photo of the gasket where this noise was coming from? Where is it at?

    I'm getting this same exact sound and would love to fix it.

    Thanks!
     
    motorgoat, Jan 9, 2025
    #32
Page 2 of 2

Products Discussed in

Toyota Genuine Parts 90915-YZZD3 Oil Filter 1 Case (QTY 10)
$52.74
To Top