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2.7 4 Banger Hesitation

Discussion in '1st Gen. Tacomas (1995-2004)' started by Layzboy, Mar 30, 2018.

Page 6 of 10
  1. Jul 24, 2018 at 6:06 PM
    #101
    Layzboy

    #101
    Layzboy [OP] Well-Known Member

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    I have had 0 time to deal with this. I was Burned pretty Good when my UPPER Radiator Hose decided to come off and Blast me Good. Hopefully be healed up soon. Replaced Radiator myself today so at least that part is fixed.
    93AC9412-E551-4CFC-9791-D3AE08AB266B.jpg
     
    Layzboy, Jul 24, 2018
    #101
  2. Jul 24, 2018 at 7:18 PM
    #102
    Layzboy

    #102
    Layzboy [OP] Well-Known Member

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    Just threw a CEL. Wow Now What? I am at the end of my Rope. Hood Issues too. Man I Can’t Win
     
    Layzboy, Jul 24, 2018
    #102
  3. Jul 24, 2018 at 10:36 PM
    #103
    Layzboy

    #103
    Layzboy [OP] Well-Known Member

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    Code P0171

    Bank 1 System 2 Lean
     
    Layzboy, Jul 24, 2018
    #103
  4. Jul 25, 2018 at 6:39 AM
    #104
    se7enine

    #104
    se7enine MCMLXXIX

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    Might be a vacuum leak somewhere. Have you tested fuel pressure already?
     
    se7enine, Jul 25, 2018
    #104
  5. Jul 25, 2018 at 8:08 AM
    #105
    cgsportsmen

    #105
    cgsportsmen Member

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    99 Tacoma 2.7L 5-Speed
    I'm having same issue with my 99 taco, 2.7L, 5-speed. cranks up and idles just fine, and idles smooth with no miss. NO CEL. BUT i have a hesitation that begins between 2300-2800 rpms while accelerating under load, and also while maintaining speed (45-55mph) when lightly on the throttle.

    I have changed plugs/wires, double-checked gaps in plugs, new fuel filter, new fuel pump and new tps sensor. Hesitation is still there and im going crazy chasing this issue over the last month. :help:

    I have not driven truck too much lately in order to keep from damaging anything internally, and to keep from having a tow bill... anyone have any advice?

    :oldglory::deadhorse::sadviolin:
     
    cgsportsmen, Jul 25, 2018
    #105
  6. Jul 25, 2018 at 9:26 AM
    #106
    Layzboy

    #106
    Layzboy [OP] Well-Known Member

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    I Believe I Have a Exhaust leak after I Had to replace my Cat after it got Stolen. May be a part of it.
     
    Layzboy, Jul 25, 2018
    #106
  7. Jul 31, 2018 at 8:58 AM
    #107
    Layzboy

    #107
    Layzboy [OP] Well-Known Member

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    Have someone looking at the Truck Right Now. Hope to report Back with some Answers. Its Hard for me to work on as I am Recovering from 2nd degree Burns
     
    Last edited: Jul 31, 2018
    Layzboy, Jul 31, 2018
    #107
  8. Jul 31, 2018 at 9:19 AM
    #108
    Russianman92

    #108
    Russianman92 Well-Known Member

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    bilstein shocks/struts Add-a-leaf Mostly stock. Running 31x10.5 r15
    Exhaust leak wouldn't cause hesitation though
     
    Russianman92, Jul 31, 2018
    #108
  9. Jul 31, 2018 at 9:32 AM
    #109
    se7enine

    #109
    se7enine MCMLXXIX

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    Depends. A leak near an O2 can cause it to run lean/rich resulting in hesitation. A leak near the header flange can lean burn exhaust valves.
     
    se7enine, Jul 31, 2018
    #109
    Layzboy[OP] likes this.
  10. Jul 31, 2018 at 10:49 AM
    #110
    Layzboy

    #110
    Layzboy [OP] Well-Known Member

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    Maybe Resulting in
    Code P0171

    Bank 1 System 2 Lean
     
    Layzboy, Jul 31, 2018
    #110
  11. Jul 31, 2018 at 12:14 PM
    #111
    MstrYota

    #111
    MstrYota Great balls of fire!

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    Daniel
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    Too much but not enough!
    I had this code on my truck right before i sold it. Took off and cleaned throttle body and MAF, then gave me the P0171 code after that. Swapped the MAF on my truck for the MAF off my buddies truck and code went away. Maybe your MAF is contaminated?
     
    MstrYota, Jul 31, 2018
    #111
  12. Jul 31, 2018 at 12:21 PM
    #112
    Layzboy

    #112
    Layzboy [OP] Well-Known Member

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    I have Cleaned MAF as part of regular maintenance. Just Cleaned TB Real good.
     
    Layzboy, Jul 31, 2018
    #112
  13. Jul 31, 2018 at 4:19 PM
    #113
    Layzboy

    #113
    Layzboy [OP] Well-Known Member

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    Man No Word Yet. Taking a long time
     
    Layzboy, Jul 31, 2018
    #113
  14. Jul 31, 2018 at 8:28 PM
    #114
    Layzboy

    #114
    Layzboy [OP] Well-Known Member

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    Guy has had my Truck all Damn Day...
     
    Layzboy, Jul 31, 2018
    #114
  15. Aug 21, 2018 at 8:37 AM
    #115
    Layzboy

    #115
    Layzboy [OP] Well-Known Member

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    Found out a Flange on my exhaust was bent when my Cat Was Stolen. Has to be cut off and a new one welded on. Exhaust leak will be fixed today. Does is have any bearing on the hesitation issue. We will find out today.
     
    Layzboy, Aug 21, 2018
    #115
  16. Aug 21, 2018 at 11:22 AM
    #116
    Layzboy

    #116
    Layzboy [OP] Well-Known Member

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    No More Leaky Leaky
    959B1C9A-D1DF-421B-96EC-1F9983AA2BFE.jpg
     
    Layzboy, Aug 21, 2018
    #116
  17. Aug 21, 2018 at 3:14 PM
    #117
    Layzboy

    #117
    Layzboy [OP] Well-Known Member

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    Problem Not solved but Not as Bad. Son is driving it and updating me. He said its more managable. So something is still lurking. Also found out today that before it would die the CEL would come on and go off after it was started again.
     
    Layzboy, Aug 21, 2018
    #117
  18. Aug 24, 2018 at 6:09 PM
    #118
    Layzboy

    #118
    Layzboy [OP] Well-Known Member

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    I have been in a Lot of traffic situations the last few days and have had 0 Hesitation. I am NOT Going to say its Fixed But So Far so good.
     
    Layzboy, Aug 24, 2018
    #118
  19. Aug 27, 2018 at 9:53 AM
    #119
    Layzboy

    #119
    Layzboy [OP] Well-Known Member

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    Not Resolved Damn It....
     
    Layzboy, Aug 27, 2018
    #119
  20. Aug 31, 2018 at 4:57 PM
    #120
    ThatsMyOldMansTruck

    #120
    ThatsMyOldMansTruck New Member

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    New TPS will be here Monday. OEM Part. Any Tricks to that install.
    Sean,
    Keep old parts if you notice you mpg drop after the install. I have high miles and you could be experiencing piston slap or clog cats.
    I have added thicking agents to oil for the slap and hp does improve...any codes that show cat issues then this could do the trick..I replace all coils and plugs and ran gum out trough the manfold smokes like crazy but seem to help too.
    Good tail winds..john
     
    ThatsMyOldMansTruck, Aug 31, 2018
    #120
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