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I4 loss of power and rumbling up hill only

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Catskltaco, Mar 1, 2023.

  1. Mar 1, 2023 at 7:57 PM
    #1
    Catskltaco

    Catskltaco [OP] Member

    Joined:
    Dec 19, 2020
    Member:
    #350093
    Messages:
    6
    Gender:
    Male
    First Name:
    Mike
    Vehicle:
    2007 silver Tacoma
    TC UCA, 5100’s, 265/70/17 generals. Double cab leafs w add a leafs. Mbrp cat back on 2.7 w 5 speed.
    While towing just under 3000 lbs 2 weeks ago, going up a very long steep grade on highway, I began to loose power and seemed like the engine was going to blow up. I got off the highway and proceeded to drive at slow speeds on back roads. Truck has been pretty much normal except when I try to push it up long hills it starts to bog down and a rumbling starts shaking the whole truck. What could be causing this?
     
  2. Mar 1, 2023 at 8:02 PM
    #2
    kidthatsirish

    kidthatsirish Well-Known Member

    Joined:
    Jan 29, 2008
    Member:
    #4485
    Messages:
    923
    Vehicle:
    06 Tacoma access cab base 2.7L 4x4 5speed manual
    Awesome CB setup, TRD leaf springs, matching camper shell...more to come some day.
    Plugged cat? Is yours a manual or auto?
     
  3. Mar 1, 2023 at 8:19 PM
    #3
    Catskltaco

    Catskltaco [OP] Member

    Joined:
    Dec 19, 2020
    Member:
    #350093
    Messages:
    6
    Gender:
    Male
    First Name:
    Mike
    Vehicle:
    2007 silver Tacoma
    TC UCA, 5100’s, 265/70/17 generals. Double cab leafs w add a leafs. Mbrp cat back on 2.7 w 5 speed.
    Good flow out of exhaust. It is a 5 spd manual. Has 240000 miles
     
  4. Mar 1, 2023 at 8:28 PM
    #4
    kidthatsirish

    kidthatsirish Well-Known Member

    Joined:
    Jan 29, 2008
    Member:
    #4485
    Messages:
    923
    Vehicle:
    06 Tacoma access cab base 2.7L 4x4 5speed manual
    Awesome CB setup, TRD leaf springs, matching camper shell...more to come some day.
    Take it on a highway....put it in third gear and speed up till about 3500-4000 rpms...if the cat is starting to go it will start to hiss as it's compressing the exhaust manifold bolt springs to let the air escape.

    Also how is the condition of your clutch?
     
  5. Mar 1, 2023 at 8:35 PM
    #5
    Catskltaco

    Catskltaco [OP] Member

    Joined:
    Dec 19, 2020
    Member:
    #350093
    Messages:
    6
    Gender:
    Male
    First Name:
    Mike
    Vehicle:
    2007 silver Tacoma
    TC UCA, 5100’s, 265/70/17 generals. Double cab leafs w add a leafs. Mbrp cat back on 2.7 w 5 speed.
    Clutch hooks up well, but throw out bearing makes noise when going from reverse to 1st. Exhaust system is a bit undersized in general. I let a cheap muffler shop put a universal muffler on with a short side exit to pass inspection a year ago.
     
  6. Mar 1, 2023 at 8:37 PM
    #6
    Catskltaco

    Catskltaco [OP] Member

    Joined:
    Dec 19, 2020
    Member:
    #350093
    Messages:
    6
    Gender:
    Male
    First Name:
    Mike
    Vehicle:
    2007 silver Tacoma
    TC UCA, 5100’s, 265/70/17 generals. Double cab leafs w add a leafs. Mbrp cat back on 2.7 w 5 speed.
    The cats are about 5 years old. Had them replaced by dealer after they were stolen.
     
  7. Mar 1, 2023 at 8:49 PM
    #7
    Steves104x4

    Steves104x4 Well-Known Member

    Joined:
    Apr 17, 2010
    Member:
    #35468
    Messages:
    15,971
    Gender:
    Male
    First Name:
    Steve
    Buffalo NY
    Vehicle:
    2010 RC 2.7 4x4
    BUCKLE UP! It makes it harder for Aliens to pull you out of your Truck.
    Pop the number 4 coil out and if the tip is covered in oil it’s time for valve cover and spark plug tube gaskets. Then I’d replace the plugs with NGK 6619 plugs and buy new Standard Ignition Blue Streak UF495 ignition coils. It worked for me. Good luck!
     

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