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possible transmission/brakes prob.

Discussion in 'Technical Chat' started by james08taco, May 4, 2011.

  1. May 4, 2011 at 3:27 PM
    #1
    james08taco

    james08taco [OP] Active Member

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    richmond va
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    08 V6 Prerunner SR5
    Bilstein w/ eibachs, rear Bilstein w/ 1.5 leaf, light racing uca's, are shell w/ Yakima rack, hella 1000 black magics, spidertrax 1.5 spacers
    I have a 2008 v6 automatic prerunner. The last week or so i've noticed that when at a stop (at a red light/ stop sign) sometimes my truck will jerk forward, like i got softly rear-ended. It doesn't do it every time but enough to notice a common re-occurrence. Does anyone know what this might be?
     
  2. May 4, 2011 at 3:28 PM
    #2
    Jester243

    Jester243 mod status????

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    Is your vent selector set to defrost, mix or is the a/c on?
     
  3. May 4, 2011 at 3:32 PM
    #3
    Jester243

    Jester243 mod status????

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    you are feeling the pump cycling on and off. It will do this if your vent selecor is set to the the defrost setting, or if the a/c is on. Nothing much to worry about, just change it to the floor or vents and see if it continues. There is also something about the truck downshifing all the way.
     
  4. May 4, 2011 at 3:33 PM
    #4
    james08taco

    james08taco [OP] Active Member

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    08 V6 Prerunner SR5
    Bilstein w/ eibachs, rear Bilstein w/ 1.5 leaf, light racing uca's, are shell w/ Yakima rack, hella 1000 black magics, spidertrax 1.5 spacers
    vent selected to head, a/c- happens both on and off
     
  5. May 4, 2011 at 3:36 PM
    #5
    james08taco

    james08taco [OP] Active Member

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    richmond va
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    08 V6 Prerunner SR5
    Bilstein w/ eibachs, rear Bilstein w/ 1.5 leaf, light racing uca's, are shell w/ Yakima rack, hella 1000 black magics, spidertrax 1.5 spacers
    Ok, cool. thanks, i was starting to get worried. Also just searched tacoma lurch and this seems to be common.
     
  6. May 4, 2011 at 3:42 PM
    #6
    A7XTaco

    A7XTaco Member

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    You don't want to know...
    It the A/C compressor kinking in. When it engages, the computer slightly revs the engine (all vehicles do it) to compensate for the load.

    The v6 has so much low end torque, that when it revs slightly it overpowers the brakes.

    I kinda like it. It reminds me how much power this little engine has!
     
  7. May 7, 2011 at 7:42 AM
    #7
    monoman

    monoman Time to get dirty!

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    Kinda sounds like axle wrap to me.:confused: Had the same thing happen to my truck. Changed out my rear springs and no problems so far.
     
  8. May 12, 2011 at 12:46 AM
    #8
    Stout890

    Stout890 Well-Known Member

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    Jason
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    HID head lights, fagtech coil overs and an AAL, gay ass 2 inch body lift (soon to be removed) taneau cover, k&n intake, soon to have an axle swap with a E locker
    whats axle wrap? my truck does this too, and lurches forward when i put it in drive also, even with ac and fans off. my rear leafs look tweaked on one side. im interested in this idea.
     
  9. May 13, 2011 at 10:13 PM
    #9
    monoman

    monoman Time to get dirty!

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