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RPM running High

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Troubletoo, Jun 20, 2009.

  1. Jun 20, 2009 at 5:18 PM
    #1
    Troubletoo

    Troubletoo [OP] Active Member

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    My 08 taco RPM is running a little high when I start up the engien and Iam in "Park." The RPM doesn't come down in the normal range until I put it in "Drive" and drive around for awhile. Anyone knows why it's doing this. Thanks
     
  2. Jun 20, 2009 at 5:28 PM
    #2
    brian

    brian Another Traitor

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    electric choke.
     
  3. Jun 20, 2009 at 5:32 PM
    #3
    Troubletoo

    Troubletoo [OP] Active Member

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    Always at cold start up... so it sounds loud and dosen't calm down for along while aften driving. It has been doing this for the last two gas tanks. I have not done any mod on the engine, exhaust, or added any intake. I wanted to take it in for service sooner, but wanted to see if things would going to get back to normal. Iam thinking maybe it's the gas station I use(shell) close to my house. I pumped gas there the last two times(I don't want to accuse them of anything, but Iam just curious.) I gonna wait for one more tank and pump gas somewhere else to see if there are any changes.
     
  4. Jun 20, 2009 at 5:33 PM
    #4
    Troubletoo

    Troubletoo [OP] Active Member

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    What's that and I do check for that? Thanks
     
  5. Jun 20, 2009 at 5:34 PM
    #5
    Troubletoo

    Troubletoo [OP] Active Member

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    I meant choke.. hehehe (brain to fast for my fingers).
     
  6. Jun 20, 2009 at 5:44 PM
    #6
    Burgman

    Burgman I KEEEEEL YOU

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    mine does it too and i believe its that the truck is warming up to operating temperature and someone else will chime in if im wrong
     
  7. Jun 20, 2009 at 5:46 PM
    #7
    brian

    brian Another Traitor

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    Unless its over 2k rpm, its normal. Electric choke is an automatic function on EFI engines that changes the air/fuel ratio on startup so that the engine runs smooth. You know how if you start a weed-eater and you have to choke it or it wont start? Same idea. When your truck starts cold, the choke automatically kicks in because the computer tells it to. At the same time it tells the engine to rev higher (usually in the 1500 RPM range) until it warms up. Your fan will clutch in as well. I would have been more worried if it hasn't been doing this until now. Usually it will calm down after you get on the road for a minute. Typically the fan clutches out for me by the time I hit second gear.


    Now if its revving higher than 2 grand, you might have an issue.
     
  8. Jun 20, 2009 at 5:51 PM
    #8
    kilgoja

    kilgoja Well-Known Member

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    yeah all efi cars rev higher when they first start up each day...once it starts to warm up the revs slowly fall to just under 1000k on most cars and trucks
     
  9. Jun 20, 2009 at 5:56 PM
    #9
    dually

    dually Low and slow

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    Thats correct guys. Well, falls below 1k for most, not including me! idle @ 1300 all day haha
     
  10. Jun 20, 2009 at 6:01 PM
    #10
    Troubletoo

    Troubletoo [OP] Active Member

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    This thread is awesome...I love it here.:) I was just getting a little concern since my taco didn't started doing that until a week ago. I relized that the engine had to warm up a bit at cold start before the RPM would come down to normal range, but it seems like the RPM was going a little higher then normal and it took a bit longer to back get normal range. Thanks guys
     
  11. Jun 20, 2009 at 6:05 PM
    #11
    Troubletoo

    Troubletoo [OP] Active Member

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    long. Ok now I feel better.
     
  12. Jun 20, 2009 at 6:47 PM
    #12
    jrws6

    jrws6 Well-Known Member

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    He has a turbo charger. ( Lucky bastard):)
     
  13. Jun 20, 2009 at 6:57 PM
    #13
    dually

    dually Low and slow

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    yes, but an infinite amount of tuning nightmares! LOL. Goddamn thing is rich as hell at idle, and my tuning guy cant help me for another week! :mad:
     
  14. Jun 20, 2009 at 9:06 PM
    #14
    reg boulette

    reg boulette Well-Known Member

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    If you can, get a ScanGauge and run with that. You can monitor engine temperature as it warms up to operating temp and watch when your engine switches from open loop to closed loop condition. (includes O2 sensor input to ECU)
     
  15. Jun 20, 2009 at 10:15 PM
    #15
    Troubletoo

    Troubletoo [OP] Active Member

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    thanks Reg, I difinitely will put that on my wanted list.:)
     
  16. Jun 20, 2009 at 10:19 PM
    #16
    Troubletoo

    Troubletoo [OP] Active Member

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    Yep, yep... that's about right... mine is doing that:D
     
  17. Jun 21, 2009 at 2:51 AM
    #17
    reg boulette

    reg boulette Well-Known Member

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