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Engine diagnostic tool

Discussion in 'General 4Runner Talk' started by Nschoens, Apr 7, 2018.

  1. Apr 7, 2018 at 3:02 PM
    #1
    Nschoens

    Nschoens [OP] New Member

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    First Name:
    Nate
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    1997 4runner sr5
    3" suspension lift
    Hello,
    New to the forum here and wanted to see if anyone could answer this for me.
    If I got an engine diagnostic tool, would it tell me the problems my 4runner might have, if there is no check engine light?
     
  2. Apr 11, 2018 at 7:41 PM
    #2
    Toyotayoda

    Toyotayoda New Member

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    Atlanta area
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    1997 SR5 4x4, 302k and counting
    Tacoma whip, 99 console box, tru trac., steering wheel, PWMS and HVAC control out of a 99.
    If you know what your looking at it's possible. You should have an idea of what certain data PIDs lok like when the engine is running well, and there are no problems. The most obvious signs of a problem are the short and long term fuel trims, other data like o2 sensor and maf readings will affect fuel trim, so learn fuel trim. misfires can be felt, a failed temp sensor can have weird symptoms, and iac valve problems happen seemingly all of the sudden, but there are codes for such events. Fuel trim is a go to, learn what fuel is doing, expand diagnostic skills.
     
  3. Apr 12, 2018 at 8:33 AM
    #3
    jester243

    jester243 rabble rabble rabble

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    Spokane, WA
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    2016 4Runner Trail Premium w/ KDSS

    is there a specific problem you think might be happening or more just as a preventative maintenance tool to keep ahead of things as they happen?
     
  4. Apr 12, 2018 at 8:53 AM
    #4
    jester243

    jester243 rabble rabble rabble

    Joined:
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    Dan
    Spokane, WA
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    if you're just looking for something to keep an eye on things I used to have the ultra guage on my Tacoma, worked pretty well and you could change the layout of each screen and decide on what gauges went where. You can check them out here: http://www.ultra-gauge.com/ultragauge/

    I had in mounted like this but a lot of guys had them up by the rear view mirror and some had them off the pillar area

    [​IMG]
     

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