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'09 manual, revs hang high during shift

Discussion in '2nd Gen. Tacomas (2005-2015)' started by mcgiiver, Jun 11, 2009.

  1. Jun 11, 2009 at 8:19 PM
    #1
    mcgiiver

    mcgiiver [OP] Well-Known Member

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    '09 2.7l 5 speed manual. I notice the revs seems to hang up high during upshifts, especially the 4-5 shift when the revs sometimes increase. This is not only annoying, but I would think it wears the clutch faster as the the engagement of the clutch brings the revs down to match road speed. Any thoughts on the problem and to why it happens and how to fix it? My thought is either the clutch switch adjustment, the fly by wire system or a software issue.
     
  2. Jun 11, 2009 at 9:47 PM
    #2
    AZsand

    AZsand Well-Known Member

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    I test drove an 09 XRunner about 2 weeks ago, it was the first thing i noticed too...God knows what it was but it was weird
     
  3. Jun 11, 2009 at 9:51 PM
    #3
    SC4333

    SC4333 Well-Known Member

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    On occation I'll have this with my '08. The only time I will experience it is during the 4-5 shift. I agree on clutch wear.

    If I remember correctly, it has to do with decreasing emissions, but don't quote me on that.
     
  4. Jun 12, 2009 at 3:56 AM
    #4
    Janster

    Janster Old & Forgetful

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    Yup.... I test drove an 07 4.0L and it did the same thing and I didn't like it.

    I bought the Auto.
     
  5. Jun 12, 2009 at 5:37 PM
    #5
    Black08Taco

    Black08Taco Well-Known Member

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    My 08 does the same thing. I think its just to keep you in the correct RPM range. Its better for the engine rather than having to always rev it back up. I dont mind it. I actually set up my race car for that.
     
  6. Jun 12, 2009 at 5:50 PM
    #6
    mcgiiver

    mcgiiver [OP] Well-Known Member

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    Rev back up? Revs are supposed to drop during upshifts. I don't understand your comment.
     
  7. Jun 12, 2009 at 5:54 PM
    #7
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    FlimFlubberJAM
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    Everything I have found, leads to it being an emission thing. I dont belive it, as once the throttle is let off, the fuel injectors cut out, therefore, no fuel to worry about emissions....BUT...I didnt engineer the truck, so who knows...
     
  8. Jun 12, 2009 at 6:16 PM
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    Snipe

    Snipe Well-Known Member

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    My 08 4.0 6spd drops about 200 and then hangs there for a few seconds, got used to that wonderful fukkin engineering joke but will never get used to the freewheel that occurs every time you are under compression and the R's drop to right about 1200 and the speed of the truck actually picks up :mad:

    I think the idiot that engineered it hasn't driven anything other then some video game car
     
  9. Jun 12, 2009 at 6:20 PM
    #9
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Fuel injectors are cut off until 1200 rpm....then they fire up again. That swhy the revs increase.....And yes, Its stupid.
     
  10. Jun 12, 2009 at 7:00 PM
    #10
    mcgiiver

    mcgiiver [OP] Well-Known Member

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    My increase in revs occurs during the 4-5 upshift at about 2000 rpm. Jumps up to about 2200. Then when I let the clutch up the revs drop to somewhere around 1700. So the clutch is bringing the revs down, I don't like that extra wear on the clutch.
     
  11. Jun 18, 2009 at 7:14 AM
    #11
    zero_B

    zero_B Well-Known Member

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    Usually the less the rpm needle drops during shift, it's better. You're keeping the rev's high to minimize that load friction in the clutch/flywheel/engine.

    I noticed the 4-5 shift in my manual trans as well, but you probably notice 4th gear is quite tall and it shifts quite smooth around the 55-60mph range. As with most cars, 5th is going to be the coasting gear, so you pull on 4th has a wide range.
     
  12. Jun 18, 2009 at 7:16 AM
    #12
    StandingCow

    StandingCow Well-Known Member

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    Hmm... I really haven't noticed this in my 09 you mean how when you go to shift the RPMs kinda stay instead of dropping?... maybe I am just used to it, as I hadn't driven manual since like 98, that was an 81 VW rabbit pickup.
     
  13. Jun 18, 2009 at 7:27 AM
    #13
    zero_B

    zero_B Well-Known Member

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    Ya, the rpm stays instead of dropping.
    And you can feel it in the shifter as well.

    Man, I wish I had an 81 Rabbit..those things were so quick!!!
     
  14. Jun 18, 2009 at 7:29 AM
    #14
    StandingCow

    StandingCow Well-Known Member

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    Ah, yea, it doesn't really bother me.. felt weird at first, but like I said, I am used to it now.

    Yea, that thing was a little beast... it was diesel too... damn thing would shake so much random objects would fall off... like the glove box... etc.. LOL
     
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