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Engine with or without vacuum pump

Discussion in '3rd Gen. Tacomas (2016-2023)' started by BrianM02, Mar 19, 2025.

Page 2 of 2
  1. Mar 20, 2025 at 3:50 PM
    #21
    gudujarlson

    #21
    gudujarlson Well-Known Member

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    Ah ok. I thought it was powered mechanically off the camshaft and that’s why the engine is not compatible with the vacuum pump type. I’ve long been confused by this and never have gotten under the hood for a deep dive.
     
    gudujarlson, Mar 20, 2025
    #21
  2. Mar 20, 2025 at 3:53 PM
    #22
    gudujarlson

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    gudujarlson Well-Known Member

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    It could be. I’m sure what I’m looking at in the picture.
     
    gudujarlson, Mar 20, 2025
    #22
    Barsoom[QUOTED] likes this.
  3. Mar 20, 2025 at 3:53 PM
    #23
    BLtheP

    #23
    BLtheP Constantly Tinkering Member

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    The vacuum pump is mounted to the right cam tower and is driven by the right intake cam. That action provides vacuum for the vacuum brake booster on models that have it.

    The hydraulic booster on OR/Pro trims is electronically powered.

    Due to the lack of a vacuum pump on the engines installed in hydraulic booster equipped trims, they use a block off plate to cover the void in the cam tower left by the missing pump.

    Vacuum pump:

    IMG_0282.jpg

    Block-Off Plate:

    IMG_0281.jpg

    Void in cam tower if pump or block off plate were removed:

    IMG_0279.jpg
     
    Last edited: Mar 20, 2025
    BLtheP, Mar 20, 2025
    #23
    PThy, FunknNasty, Barsoom and 2 others like this.
  4. Mar 20, 2025 at 4:10 PM
    #24
    MGMDesertTaco

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    MGMDesertTaco Come on, live a little...

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    What's the going rate for a junkyard 3.5 these days?
     
    MGMDesertTaco, Mar 20, 2025
    #24
Page 2 of 2

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