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Bucking, jerking at 45-60 MPH under acceleration

Discussion in '4th Gen 4Runners (2003-2009)' started by Jrich124, Jul 13, 2017.

  1. Jul 13, 2017 at 5:28 PM
    #1
    Jrich124

    Jrich124 [OP] New Member

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    2007 4runner sport 130,000 miles 6cyl bucks or jerks at around 45+ mph under slight acceleration noticed mostly on slight uphill grade. Seems to happen after the car warms up. Lasts only a second or two and quits until I accelerate again. No codes, Dealer can't find problem. Clean air filter, oil is clean, (no antifreeze that I can see). Have owned this car for 10 years, well maintained, just started this recently. PLEASE help. Joe
     
  2. Jul 13, 2017 at 10:24 PM
    #2
    4thgen-mg

    4thgen-mg New Member

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    Hey Joe,
    I have an 05 with a similar issue.. sounds like you're might be a little more severe than mine..
    This is what I know so far,
    1- it's referred to as a transmission rumble and it's not that rare
    2- the only people I've heard of that have actually fixed the issue are those that were under warranty and had the entire tranny replaced.
    3- a solid theory I've heard it's that it's actually the torque converter going bad.

    I'm waiting for mine to get worse to see if someone can actually diagnose it.
     
    Jrich124 [OP] likes this.
  3. Jul 14, 2017 at 6:42 AM
    #3
    Jrich124

    Jrich124 [OP] New Member

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    Still researching, but from what I have read it's probably the torque converter. I will drive it some more until it can be diagnosed and repaired. Thanks Joe
     
  4. Jul 14, 2017 at 7:16 AM
    #4
    brochacho

    brochacho New Member

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    I'm just here because I read your thread title very differently in my head....I have no answers for you, good luck!
     
    TacoguyBill likes this.
  5. Jul 14, 2017 at 9:05 PM
    #5
    larramo

    larramo 3ed gen faithfully

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    3" lift but mostly all stock not a scratch on it it is pristine condition amazing for being 19 years old.
    DID YOU HAVE YOUR TRANSMISSION SERVICED CHANGE FLUID AND FILTER AND WHEN I DID MY TRANS I BOUGHT A SPECIFIC OIL FOR TOYOTAS IT NOT CHEEP $65 PER GALLON AND IT TAKES 1 GALLON AND ONE QT TO FILL IT UP I GOT IT FROM O'REILLY'S SPECIAL ORDER BUT IT IS FULL SYNTHETIC AND WILL LAST A LONG TIME. WHEN I GOT MY 98 4RUNNER IT USED TO SHIFT HARD NOT DOING THAT ANY MORE SINCE I CHANGED THE FLUID AND FILTER WITH THE FLUID I AM TALKING ABOUT. LARRY B
     
    Benny123 and Jrich124 [OP] like this.
  6. Jan 18, 2018 at 1:03 PM
    #6
    ATX4Runner

    ATX4Runner New Member

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    RE:Bucking & Jerking at 45-60 MPH
    I had this same issue with my 2005 4Runner. I thought for sure it was something with the transmission. Turns out it was a bad ignition coil. The dealer figured it out and since the ignition coil was replaced it never happened again. Good luck!
     
    captsolo likes this.
  7. Feb 1, 2018 at 9:23 AM
    #7
    lsld222

    lsld222 New Member

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    I can eliminate the rumble by shifting into 4. Drive in 4... no rumble. Drive in D...rumble.
     
  8. Feb 1, 2018 at 9:42 AM
    #8
    WanderlostOverland

    WanderlostOverland New Member

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    By the description of the symptoms it's difficult to tell whether it'd a misfire in the engine or a shudder in the trans. Does it go away if you switch the shifter from Drive to 4th?
     
  9. Feb 1, 2018 at 9:56 AM
    #9
    lsld222

    lsld222 New Member

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    Mine does. Runs fine in 4 but shudders in drive.
     
  10. Feb 1, 2018 at 10:24 AM
    #10
    WanderlostOverland

    WanderlostOverland New Member

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    We had the very same thing happening with our '07 FJ Cruiser around 220, 000 miles. Took it to the dealership and had them do a COMPLETE flush and refill. That was almost 20,000 miles ago, no problems since. If they tell you they can't/ won't do it, go somewhere else. Don't confuse a flush and fill with a drain and fill, not the same.
    Some people will say that flushing will dislodge crud in the system and cause problems, but I don't see the downside. Either you have the converter changed, $$$, or crud will plug a passage where you have to pull the trans,$$$.
    Others will recommend using a product called Shudder Fix or something like that. My trans guy recommends flush and fill first, if it still occurs put in a tube of the stuff as a last resort.
     
    Benny123 likes this.
  11. Feb 1, 2018 at 10:36 AM
    #11
    lsld222

    lsld222 New Member

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    Did the fluid flush. No change. Did the shudder fix. Worked for about 2 months. Shudder is back.
     
  12. Nov 5, 2018 at 6:54 PM
    #12
    hayzjj02

    hayzjj02 New Member

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    Hello, I'm experiencing the same issues on my '06 SR5. were you able to find the problem? i have flushed Trans,fuel injection cleaners, etc, but no change. happens with low RPM's(1-2k) not while accelerating with higher RPM's
     
  13. Mar 24, 2019 at 12:21 PM
    #13
    ct671

    ct671 New Member

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    Same issue here with my 05 SR5, 135K. Any updates?
     
    Nickwt4r likes this.
  14. Jul 17, 2019 at 6:31 PM
    #14
    Nickwt4r

    Nickwt4r New Member

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    First post on any forums but I had a similar problem with my 96 limited.. 2 months ago I noticed some “bucking” while on the highway going around 60 mph and around 2000 rpms.
    The truck didn’t throw a code so I read on some forums and replaced plugs, wires, and a fuel filter. I couldn’t tell if it was a transmission problem or an engine problem. Instead of taking it in I figured I’d wait till it threw a CEL or until the tranny blew. 2 months later it throws a code for a cylinder 4 misfire (P0304). Since I did the plugs I decided to swap out coil packs between cylinders 1-2 and 3-4. Nothing changed. Then said screw it and picked up a used FUEL INJECTOR for cylinder 4. BOOM she’s running fine now. Hope this helps
     
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  15. Jul 18, 2019 at 8:44 AM
    #15
    ct671

    ct671 New Member

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    It took nearly a year for the code to pop up but my problem was related to the cylinder 5 coil which was cracked nearly in half. I had the same problem typically from going uphill. FINALLY my 4Runner drives smooth.
     
    Nickwt4r likes this.
  16. Jul 18, 2019 at 8:50 AM
    #16
    Benny123

    Benny123 Long term owner

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    Have you greased your driveshaft zerks?
    Changed oil in front diff, transfer case and rear end?
     
    Nickwt4r likes this.
  17. Jul 19, 2019 at 7:41 AM
    #17
    ct671

    ct671 New Member

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    Front, center, and rear in March 2018 but the problem got worse over the following year until the error code popped up. For me, the symptoms were the same but the cure was finding the broken coil.
     
  18. Jul 19, 2019 at 7:59 AM
    #18
    captsolo

    captsolo New Member

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    Good post Nick! I haven't had any running issues with my 2005 4 runner V6 (150,000 miles - all short trips). Maintenance free - except new 10W-30 oil every 6 months. I'm in hot hot hot Bahamas - so I use slightly higher weight oil (10W - 30).

    Had the dealer do the transmission fluid change at 100,000 miles. Shifts fine still. Wonder what is recommended for 200,000 miles on 4 runners?

    No codes since I purchased the vehicle!

    Jrich: Just guessing, but the bucking on accelerations sounds like fuel issue - perhaps filter, but I'm not sure 4 runners have them - except inside the tank.

    Change the spark plugs. Run a good scan tool for the injectors and the coils.
     
    Last edited: Jul 24, 2019

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