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Engine whining noise

Discussion in '4th Gen 4Runners (2003-2009)' started by runnergal, Nov 3, 2024.

  1. Nov 3, 2024 at 12:59 PM
    #1
    runnergal

    #1
    runnergal [OP] New Member

    Joined:
    Dec 2, 2023
    Member:
    #37040
    Messages:
    18
    Gender:
    Female
    Vehicle:
    1997 4Runner
    runnergal, Nov 3, 2024
    #1
  2. Nov 3, 2024 at 9:13 PM
    #2
    Hungryhawk

    #2
    Hungryhawk New Member

    Joined:
    Jul 30, 2017
    Member:
    #4480
    Messages:
    433
    Gender:
    Male
    First Name:
    Jim
    Southern CA
    Vehicle:
    2017 SR5
    Does it change with RPM?
    My guess a bearing on engine front. Do you have serpentine belt? Generally easy to take off. Carefully sketch or photo its exact pattern. Find the tension and idler pullies. Following procedure ease tension and slip belt off.
    Spin by hand the tension pully feeling for noise, roughness or wobble etc. then spin idler pully & check same.
    Then inspect water pump (not sure about 4th gen), Alternator, power steering pump.(do not know details of 4th gen) maybe have their own belts?
    Hopefully you can find a worn out noisey bearing.
     
    Hungryhawk, Nov 3, 2024
    #2
  3. Nov 8, 2024 at 6:51 AM
    #3
    Bluesky 07

    #3
    Bluesky 07 Not a New Member

    Joined:
    Jan 26, 2019
    Member:
    #8560
    Messages:
    636
    Gender:
    Male
    First Name:
    Russell
    Northern Georgia
    Vehicle:
    Silver ‘07 Sport V6 4WD @ 270K miles
    “Deep” Satoshi grille | X-REAS delete / Eibach | Weathertech front & rear mats | Tinted front windows | Floor Armor cargo mat | TPMS bypass | LED interior, tag, & reverse lights | BlueSea Systems console USB power ports | Pioneer AVH-2550NEX HU + Audiovox backup camera | Fumoto F-103S | Rockville lo-pro subwoofer | Kenwood speakers & KAC-M1804 amp | Philips H9/9011 headlight bulbs | Wolfbox G850 Pro dash/rear cam | Map light mod | Breather mod | OBD Fusion diagnostics
    Agree with the above re: possibly a belt pulley bearing. How many miles on your truck?
     
    Bluesky 07, Nov 8, 2024
    #3
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