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Low idle after changing belt and battery

Discussion in '2nd Gen. Tacomas (2005-2015)' started by 009NJF, Oct 4, 2010.

  1. Oct 4, 2010 at 11:55 AM
    #1
    009NJF

    009NJF [OP] Member

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    Changed a squeeling belt then found out i had a dead battery, changed that too but now my truck idles low.
     
  2. Oct 4, 2010 at 12:07 PM
    #2
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Welcome to TW!

    Whats "Low"? What RPM is it idling at, and what is the tempurature state of the engine?
     
  3. Oct 4, 2010 at 12:23 PM
    #3
    009NJF

    009NJF [OP] Member

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    It starts out at regular idle like around 850 rpm then in about 60 sec. it drops to around 500 rpm
     
  4. Oct 4, 2010 at 12:28 PM
    #4
    tacobo670

    tacobo670 if you have to ask, u can't afford it

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    its cuz u reset ecm learned memory when u replaced battery. try clean MAF sensor with good quality electronics cleaner. u must drive around for a little bit for ecm to re-learn values and drive patterns. its no probs.
     
  5. Oct 4, 2010 at 12:38 PM
    #5
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    550 is normal for a warmed up engine (1GR-FE)
     
  6. Oct 4, 2010 at 12:51 PM
    #6
    tacobo670

    tacobo670 if you have to ask, u can't afford it

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    im just saying.... v6 1gr should idle around 750-800 . 550 seems to low even for 2tr 4-cyl. if my truck idles at 550, im checking it out to see wats going wrong.
     
  7. Oct 4, 2010 at 12:57 PM
    #7
    cinch

    cinch Member Extraordinaire

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    Mine idles at about 550 - 600 when warmed up and AC is not on.
     
  8. Oct 4, 2010 at 1:01 PM
    #8
    tacobo670

    tacobo670 if you have to ask, u can't afford it

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    idk. its all about learned memory. maybe my truck is at high idle all the time cuz i drive so fast all the time n i keep high rpm's while driving cuz i drive so fast when i drive really fast lol
     
  9. Oct 4, 2010 at 1:18 PM
    #9
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Im just sayin.....550 is a normal idle for the 1Gr motor.
     
  10. Oct 4, 2010 at 1:18 PM
    #10
    009NJF

    009NJF [OP] Member

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    Thanks, will try the cleaner on sensor and throttle body.
     
  11. Oct 4, 2010 at 1:20 PM
    #11
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Resetting the ECU has nothing to do with the idle. The idle speed is a fixed value on the ECU.



    OP.....What idle is it at?
     
  12. Oct 4, 2010 at 1:27 PM
    #12
    tacobo670

    tacobo670 if you have to ask, u can't afford it

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    resetting ecu can changed learned value of MAF sensor readings. if value is reset and maf is dirty, airflow readings will not be correct for ecu. it will eventually relearn/calibrate itself to airflow from maf sensor readings ("idle up"). i deal with that prob everyday. doing recalls on tacos for pedal recall where we gotta reflash ecu. its a common problem. im just saying thats how the system works. from my experience.
     
  13. Oct 7, 2010 at 5:54 AM
    #13
    009NJF

    009NJF [OP] Member

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    K&N cold air intake
    Thanks to everyone for your input,I got the problem resolve so I'm trucking again. I used a cotton swab with a little bit of soap water and cleaned the MAF, it seems years of k&N filter oil fouled it. Drove around a bit and it's okay now. Thanks.
     
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