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idle speed after cleaning throttle body

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Blaze1404, Jul 29, 2010.

  1. Jul 29, 2010 at 8:35 PM
    #1
    Blaze1404

    Blaze1404 [OP] Member

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    Dual-Exahust-K&N Cold Air Intake
    I just cleaned my throttle body today with carbeurator cleaner because it was idling rough. I put everything back together and put a new air filter on my K&N cold air intake and now it idles at 1.5k rpms in park and about 1k in drive. When I am decellerating down to around 10-15 mph until stopped(automatic transmission) it jerks like it wants to try and take off. I dont understand why my idling speed is high now and I dont think that its idling at the right rate. Please Help.
     
  2. Jul 29, 2010 at 8:38 PM
    #2
    IslandBoy71

    IslandBoy71 Well-Known Member

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    maybe you have a vacuum leak? Did you clean the MAF too?
     
  3. Jul 29, 2010 at 8:41 PM
    #3
    AKTacoma

    AKTacoma Dedicated Crew Chief

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    having a similar issue on my 1st gen, did you disconnect the battery when you cleaned it?
     
  4. Jul 29, 2010 at 8:42 PM
    #4
    cjimenRR

    cjimenRR Be Good or Be Good At It

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    The ecu memory needs to be reset, disconnect the battery terminals for about 10min. Reconnect them and drive it for a few blocks, it will "re-learn" it's memory values
     
  5. Jul 29, 2010 at 8:49 PM
    #5
    Blaze1404

    Blaze1404 [OP] Member

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    Whats the MAF?
     
  6. Jul 29, 2010 at 8:57 PM
    #6
    IslandBoy71

    IslandBoy71 Well-Known Member

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  7. Jul 29, 2010 at 9:45 PM
    #7
    Blaze1404

    Blaze1404 [OP] Member

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    Thanks for the help guys, I disconnected and reconnected the battery and everything worked fine. Its not idling rough anymore either ;)
     
  8. Sep 4, 2010 at 11:59 AM
    #8
    LtHixson

    LtHixson My Other Truck is an Engine

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    I had a little down time at work with it being a holiday weekend, so I cleaned my MAF and throttle body last night per instructions on TW. The first time I started the truck afterward, it was idling at about 1800-2000 RPM. After numerous searches, I finally found this post.

    I guess it would be like breathing through a straw your whole life, and finally somebody takes away the straw (cleans the MAF and throttle body) and all of a sudden you have to learn to not work so hard at breathing. Anyway, I'm off to disconnect my battery right now. (Mental note to me -- write down trip mileage first since it'll reset and I'm trying to keep accurate records to see what works for my MPG).

    If it doesn't fix the problem for some reason, I'll be back on here. Otherwise, thanks!
     
  9. Oct 16, 2012 at 4:59 PM
    #9
    photonashville

    photonashville Well-Known Member

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    Hate to resurrect this thread, but since it solved my problem today, I think it's a good reminder to others to disconnect the battery for a short while after a throttle body cleaning.

    My TB was thick with muck and now shiny and clean at 116K miles. The truck idled and drove oddly until I disconnected the battery for the computer to reset. Drives great now.

    Always a deserved 'Thank You' to the tacomaworld crowd!
     
  10. Oct 16, 2012 at 5:00 PM
    #10
    photonashville

    photonashville Well-Known Member

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    /\ /\

    -- strange double post --
     
  11. Oct 25, 2012 at 7:56 AM
    #11
    toy4x4ota

    toy4x4ota New Member

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    dallas
    reno
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    New to this site and I have to say that it has been a huge help already.

    I just cleaned my throttle body on a 2000 2.7l (fully removed and scrubbed clean, even removed the IAC to prevent gunk getting in it) and my idle we stay at about 2000 and to 1100 RPMs. Just read through this thread and now I have disconnected my battery to reset the ECU. I hope this helps as I am selling the truck today and don't feel right taking money for something that won't even idle right. I will report back, and thanks again for all of the information.

    Dallas

    edit: just realized that this not the right section for this post, hope this technique works anyways.
     
  12. Oct 25, 2012 at 8:16 AM
    #12
    ETaco23

    ETaco23 Marshall offroad Fabrication

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    If you didnt clean your MAF.. I would def. do that! especially with a K&N Intake... It will make a difference also.
     
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