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Replaced IAC valve today, high idle problem solved

Discussion in '1st Gen. Tacomas (1995-2004)' started by dankgus, Sep 5, 2022.

  1. Sep 5, 2022 at 10:28 PM
    #1
    dankgus

    dankgus [OP] Well-Known Member

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    The truck has had intermittent high idle for a while. Actually, the truck has been down for months for head/gasket replacement. Today I started it up and once again the high idle was an issue. A little over 2k rpms.

    I cleaned the disgusting IAC valve and still the problem persisted. I ended up testing the valve with some test leads hooked up to the battery. There was zero action, bad valve. I went to O'Reilly's and picked up a *non* OEM IAC valve just because I was in a hurry but paid basically the same price as OEM. I tested the valve before installation and it worked as expected. Damn, this is an easy part to replace. Fyi, if you suffer from high idle it's probably an easy fix. Clean it and then try using test leads to check the operation. Replace if it doesn't work.

    That is all, just wanted to share my success.
     
    Bivouac and CPS-65 like this.
  2. Sep 5, 2022 at 11:01 PM
    #2
    YotaGangYotaGang

    YotaGangYotaGang PreRunners are wannabe 4x4’s

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    95, 97, 01 Tacoma | 06 Tundra | 07 FJ Cruiser | 08 Prius
    A rtt i never use and 30 light bars
    i wouldve gotten an oem one
     
  3. Sep 5, 2022 at 11:16 PM
    #3
    dankgus

    dankgus [OP] Well-Known Member

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    Well, sometimes a guy gets sick of dragging a project out week after week, month after month for the next part that's needed. I use pretty much all OEM parts too but this one was available today. Oh well.
     
    Madjik_Man and Bivouac like this.
  4. Sep 6, 2022 at 5:40 AM
    #4
    Bivouac

    Bivouac Well-Known Member

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    Northern Lehigh Valley Pa
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    2000 Tacoma 5 speed 3.4
    Remains to be seen I bought the tires and wheels the rest came along
    I can relate sometimes one needs to get up and running.

    Rather then wait for dealer parts to arrive. Mean while move on to something else in my cases months turn into years.
     
  5. Sep 6, 2022 at 1:50 PM
    #5
    TragicBronson

    TragicBronson Well-Known Member

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    Eddie
    Pflugerville TX
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    Can anybody define what the High Idle range is for the audience? Or what Normal Idle is? TIA
     
  6. Sep 6, 2022 at 2:00 PM
    #6
    Andy01DblCabTacoma

    Andy01DblCabTacoma Well-Known Member

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    Normal idle (in neutral, once up to operating temp, without AC, and all ecu monitors have been run) should be around 750 rpm. All sorts of things can cause the idle to be higher which is why I listed off at least a few of them.
     
    TragicBronson[QUOTED] likes this.
  7. Sep 6, 2022 at 3:44 PM
    #7
    O'Silver_Taco

    O'Silver_Taco Well-Known Member

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    3rz to 2Rz bebuilt block and new heads
    Fsm Inspect idle up speed....
     

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    TragicBronson likes this.

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