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Rough Idle When at a Stop

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Shaowei, Dec 18, 2012.

  1. Dec 22, 2012 at 4:27 PM
    #21
    Shaowei

    Shaowei [OP] Well-Known Member

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    Ryan
    New Mexico
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    05 Tacoma 4x4 LB
    Mine dies it all year long, hot or cold. Hence, it gets old really quick.
     
  2. Dec 22, 2012 at 6:54 PM
    #22
    tinker2

    tinker2 Well-Known Member

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    East Of The Big River
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    08 4x4 SR5 Trd Rugged Trail pkg. Silver Mica
    My advice is change the plugs, clean the MAF Sensor and throttle body and replace the air filter with an OEM type filer for now. Then you'll know what has been done and if it persists it'll tell you what is not causing the problem. IMO
     
  3. Jan 5, 2013 at 9:20 PM
    #23
    Shaowei

    Shaowei [OP] Well-Known Member

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    Ryan
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    05 Tacoma 4x4 LB
    I finally was able to do some of these recommendations. I changed the plugs (actually still had the original Denso and NGK plugs), the PCV, and cleaned the MAF, air filter, and throttle body. I don't have the original air filter assy.

    The PCV looked pretty well used...
    ImageUploadedByTapatalk1357449106.356512.jpg

    The plugs looked alright...
    ImageUploadedByTapatalk1357449134.954596.jpg

    So far the engine seems to idle better but time will tell. I'll keep this post updated as I know more.
     
  4. Jan 6, 2013 at 6:30 AM
    #24
    Toyo_Jet

    Toyo_Jet Well-Known Member

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    Shane
    Flatlands of Indiana
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    10 4X4 V6 SR5 access Cab
    The surge when stopped is the AC compressor kicking in. Toyota seems to be a little over zealous on the idle speed compensation. If you have defrost selected, even when you are on heat, The compressor can cycle.
    As far as the rough idle, I'm noticing my 2010 getting a little rougher, not real bad, and not a random shake. Almost like you can feel every cylinder fire. I'll be keeping an eye on it.
     
  5. Jan 7, 2013 at 12:24 PM
    #25
    tinker2

    tinker2 Well-Known Member

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    East Of The Big River
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    08 4x4 SR5 Trd Rugged Trail pkg. Silver Mica
    Glad to hear what you did helped. As for the plugs, they needed changed. When the electrode burns away leaving it round, it's time for a change. I painted a red line pointing at the electrode, you can see it if you blow up the picture..

    ImageUploadedByTapatalk1357449134_954596.jpg
     
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