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Hesitation

Discussion in '2.5 Gen Tundras (2014-2021)' started by kmungal70, May 16, 2019.

  1. May 16, 2019 at 9:09 AM
    #1
    kmungal70

    kmungal70 [OP] New Member

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    Hello all. I currently have a 2016 Tundra SR5 (2WD)58K miles, purchased used at 50K 6 months ago.
    I am experiencing a hesitation when accelerating, (local or highway traffic, not every time but more often than not).
    I have taken it back to the dealer to be diagnosed at least 5 times. The result is still the same
    "they feel the hesitation but cant pin point the cause". They claimed to have ran a diagnostic check and no problems. I was told they even did a pressure test on the fuel system. I use 87 octane fuel and I've even tried the higher octane with no improvements. Any advice or suggestions please.
     
  2. May 16, 2019 at 9:27 AM
    #2
    Ibanez6224

    Ibanez6224 New Member

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    I think this is standard with these trucks. My 19 has a little bit of hesitation unless I put it in tow mode.
     
    P-Factor likes this.
  3. May 16, 2019 at 9:31 AM
    #3
    15whtrd

    15whtrd Mr. Blonde

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    Try pressing and holding the traction control button for three seconds. This will turn on the simulated limited slip and turn off traction control. You could then hit it for another three seconds and turn everything off. I tend to just do the first step as it keeps my truck from trying to cut power off the line if I need to get on it into traffic.

    Just a thought for something to try. Just to eliminate tire slippage chopping throttle.
     
    TundraDude18 and Eric32444 like this.
  4. May 16, 2019 at 4:07 PM
    #4
    Crunch527

    Crunch527 Brute Force and Ignorance

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    Higher octane only helps with detonation for higher compression ratios and typically, the 91/93 grades don’t have alcohol in them which is a more stable blend.

    My truck was slightly stumbling on startup and I did the following and it cleaned up the issues.
    1. Remove Clean the throttle body (be sure to use throttle body cleaner)
    2. Remove and clean MAF sensor (be sure to use MAF sensor cleaner)
    3. Run a can of BG44K through the gas tank.
     
    Last edited: May 16, 2019
    ColoradoTJ likes this.
  5. May 16, 2019 at 4:16 PM
    #5
    TundraMcGov.

    TundraMcGov. Your friend. Your foe. Not yo Ho.

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    Coming to a Tundra from a 1997 T100 with 265,000 miles that I've done only routine maintenance to (never cleaned the MAF sensor) I'm surprised to see that it's considered a true option on a truck with just 58,000 miles to clean the MAF sensor. But these new fangled machines are possibly MUCH MORE finicky (thank you California).

    OP, have you disconnected the battery terminals for 15 full minutes to do an electric/electronic reset?

    Also (if you haven't already done another additive) consider running a 12 oz bottle of Techron through it (add to a full tank of gas).
     
    Last edited: May 16, 2019
    WFD473 and 15whtrd like this.
  6. May 16, 2019 at 5:25 PM
    #6
    15whtrd

    15whtrd Mr. Blonde

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    Maybe too much oil on the K&N. Possibly fouled up your MAF.
     
    Tundyfundy and ColoradoTJ like this.
  7. May 16, 2019 at 7:45 PM
    #7
    Crunch527

    Crunch527 Brute Force and Ignorance

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    I hear ya. I also didn’t realize that my 2014 doesn’t have a fuel filter either? That was where my head was but when I went to get a fuel filter I discovered there isn’t one. So that left me with MAF sensor cleaning, TB cleaning and the BG44K fuel treatment. Not sure which one was the culprit but it made all the difference.

    Anyway, about the same time of the stumbling, I got a MAF code once so I cleaned it all together. I was surprised at how much gunk was caked inside the throttle body...I did all this at 60K, BTW.
     
    ColoradoTJ likes this.
  8. May 16, 2019 at 8:09 PM
    #8
    ColoradoTJ

    ColoradoTJ Certified tow LEO Staff Member

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    I clean the MAF sensors on all my vehicles frequently (every 10K miles). For as many miles I put on my vehicles per year (50-55K miles), having a poor running fuel injection systems isn't an option at 3.49 per gallon.
     
    NewImprovedRon, Crunch527 and 15whtrd like this.
  9. Jun 4, 2019 at 11:15 AM
    #9
    kmungal70

    kmungal70 [OP] New Member

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    Thank You all for the great suggestions. I did not get around to trying any of them yet, but I tried something this weekend, which was filling up with Chevron Supreme Plus, based on just a thought, (yes a bit $$). The problem no longer exist. I even went onto the highway to test it which was where the most aggravation was when accelerating, the truck had 0 hesitation and even had a noticeable throttle response.
     
  10. Jun 4, 2019 at 12:27 PM
    #10
    15whtrd

    15whtrd Mr. Blonde

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    Yeah, crap gas can get you sometimes. I stay away from Arco and similar type fuels. Even though they say they are top-tier. I’m usually at Costco, Chevron, 76 etc.
     
  11. Jun 4, 2019 at 2:24 PM
    #11
    TundraDude18

    TundraDude18 Deus vult

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    Threads like these are one of the reasons I am on this forum. If I ever have that problem, now I know what to do.:thumbsup:
     
  12. Jun 14, 2019 at 7:34 AM
    #12
    kmungal70

    kmungal70 [OP] New Member

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    Still Experimenting.... So I tried filling up with the mid grade gas and sure enough the hesitation returned, it was very much noticeable on the highway. Unless i'm doing something wrong, I've come to the conclusion that this Tundra only performs well when it is fed the premium fuel only.
     
  13. Jun 14, 2019 at 7:36 AM
    #13
    texasrho83

    texasrho83 DGAF#1

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    Get it tuned and/or use something like a pedal commander. You'll see immediate results.
     
  14. Jun 14, 2019 at 7:40 AM
    #14
    Tundra234

    Tundra234 New Member

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    +1 on Pedal Commander
     

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