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2.7L slight whistle at 2900 RPM under acceleration

Discussion in '2nd Gen. Tacomas (2005-2015)' started by andrew61987, Mar 27, 2018.

  1. Mar 27, 2018 at 12:09 PM
    #1
    andrew61987

    #1
    andrew61987 [OP] Well-Known Member

    Joined:
    Jun 2, 2015
    Member:
    #156610
    Messages:
    1,283
    Vehicle:
    2008 Access Cab 4WD, 2.7L 5 speed
    When I'm accelerating as my revs pass 2900 there's always a slight high frequency whistle sound from under the hood. If I'm real careful I can replicate it at constant speed, but it seems to come and go as I play with the gas pedal gently. Press down very slightly as if to very gently accelerate I hear it right around 2900. Throttle lift and it goes away. It's quiet enough that I don't hear it over the radio and I really need to be driving next to a wall to hear it. Anybody else heard this?
     
    andrew61987, Mar 27, 2018
    #1

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