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Manual trans rpm's stay up too long

Discussion in '2nd Gen. Tacomas (2005-2015)' started by 4toys, Mar 29, 2016.

  1. Mar 29, 2016 at 7:08 PM
    #1
    4toys

    4toys [OP] Well-Known Member

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    5100's @2.5, AAL
    Thinking about moving up from a 2000 TRD OR V-6 MT to a very similar 2011. While testing the 2011 I noticed that the rpm's stay up for a long, long time when shifting up. Even when coming to a stop in neutral or with clutch in, the rpm's take about 6-7 seconds to settle down to idle.

    My 1998 4Runner V-6 MT did this, but the 2000 does not. Is this a common problem, and if so is there a known cure?

    tia,

    4toys
     
  2. Mar 29, 2016 at 7:14 PM
    #2
    steelhd

    steelhd Well-Known Member

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    Six or seven seconds isn't normal. There is a very short time (part of a second) where I think the ECU is keeping RPMs up for emissions. But maybe I'm so accustomed to the truck that I don't even notice. But don't think so. Will pay attention tomorrow and post if the Rs stay up that long.
     
  3. Mar 29, 2016 at 7:37 PM
    #3
    flying_az

    flying_az Well-Known Member

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    It is normal for the rpm's to stay high while the truck is moving, even in neutral. Once you slow down enough for the computer to realize that you are stopping, it will lower the rpm.
     
    PSUnick likes this.
  4. Mar 29, 2016 at 8:43 PM
    #4
    shakerhood

    shakerhood Well-Known Member

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    RPM Hang is normal with the electronic throttle bodies, when I went from my 2000 to my 2008 it was really noticeable at first but after the first couple of weeks you won't even think of it again.
     
  5. Mar 29, 2016 at 8:48 PM
    #5
    Syncros

    Syncros Well-Known Member

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    Not sure you are noticing the common "rev hang" or just the slower revving nature of the 1grfe.

    If its the rev hang bothering you try shifting a bit different than usual. On an upshift let off the throttle completely and let the engine run out for 0.25 second or so before you disengage the clutch. There's a short window where it will shift just right. It takes a bit of time to get used to.
     
  6. Mar 30, 2016 at 6:49 AM
    #6
    K.Ray

    K.Ray Well-Known Member

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    As previous replies have noted, it's normal with the second gen manual transmission trucks. It's an emissions thing. I was very annoyed by it at first but you get accustomed to it. I've slowed down and drive it like a real truck, not a sports car.
     
  7. Mar 30, 2016 at 9:17 AM
    #7
    4toys

    4toys [OP] Well-Known Member

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    5100's @2.5, AAL
    With my 2000, using a higher gear in low range with diff locked gives traction in very marginal conditions. This kind of "balloon-foot" control is apparently the only benefit remaining with the M6; it's certainly not as driver-friendly on pavement, nor does it deliver the mpg's. Do the newer traction aids [nannies?] match the level of control available with the manual in my 2000?

    I had a 2005 4Runner Sport V-8 with hill descent. The 5-speed auto was nice on-road, but the setup did not inspire confidence off-road. It was possible to get stuck on nearly-level wet ground. Are 2009+ Tacoma TRD OR's with auto going to perform any better off road?

    All vehicles are 4x4, by the way.

    t110
     
  8. Mar 30, 2016 at 11:31 AM
    #8
    obscurotron

    obscurotron Well-Known Member

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    Too many to list, and I've probably forgotten a bunch.
    Mine doesn't hang that long - maybe 2.5-3 seconds. When the battery has been disconnected for a while, the revs do hang longer (5+ seconds) for the first few dozen miles of city driving. I assume it's an ECU learning/calibration procedure related to the OBD-II readiness checks.
     
  9. Jun 28, 2016 at 3:29 PM
    #9
    Scruffie

    Scruffie Well-Known Member

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    Ran across this thread after doing a search for throttle hang. Just to see if what mine was doing was normal for this truck. It's really starting to P's me off. In the old days would have hooked an extra spring to the throttle return. I've driven nothing but manuals for 46 years and never ran across something like this throttle runon before. My last Ranger had throttle body injection and I had excellent throttle response with it. And it makes no sense from a milage aspect to have the injection feeding more fuel when you are between shifts and off the gas. Great for speed shifting but who wants to do that all the time. My only real issue with my truck to this point.
     
  10. Jun 29, 2016 at 6:32 AM
    #10
    K.Ray

    K.Ray Well-Known Member

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    Yes, it is normal and engineered to meet emission standards. (burns leftover fuel when you let off the throttle)

    After owning/driving a manual 2nd gen truck and now having an automatic....Toyota absolutely designed this truck for the automatic transmission. The manual was a complete after thought. The auto is vastly more refined, efficient, and faster, too.
     

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