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Diagnostic Help Needed!

Discussion in '4Runners' started by Tacomagirl64, Feb 21, 2017.

  1. Feb 21, 2017 at 7:57 AM
    #1
    Tacomagirl64

    #1
    Tacomagirl64 [OP] Well-Known Member

    Joined:
    Sep 4, 2010
    Member:
    #42712
    Messages:
    875
    Gender:
    Female
    First Name:
    Sarah
    Phoenix, Arizona
    Vehicle:
    2003 Tacoma SR5 3.4L
    King Coilovers 3", AllPro upper control arms, fabtech rear shocks, Avis Offroad Bed rack and roof rack, Avid sliders, Ulta 16" Baja wheels and 285/75/16 KO2s
    Hoping for some help with an issue I have on a 98 4runner. I am very familiar with Tacoma's but have never had this issue with mine, and now I have this 4runner that seems to have an abundance of issues.

    I'll start out by saying that it does need either an exhaust manifold gasket or a new manifold, but over the past few days the symptoms have gotten drastically worse to the point of wanting to stall. It feels as though there is a loss of power. 1st through 3rd gear are okay, but then going in to 4th with your foot all the way down takes forever to get up to speed. The plugs, wires, and fuel filter have been replaced already and the transmission has just been flushed (not sure it matters but didn't want to leave this out). The MAF sensor has been cleaned and air filter looks clean and it has just been sea foamed. After the sea foam it runs much better, but still has not solved the issue.

    When running the codes I get one that says misfire cylinder 2 and 4 and random misfire and then another one for the o2 sensor. After running some fuel injector cleaner through it, the only code that still pulls is a misfire in cylinder 2. Does this have more to do with the injectors?

    Does anyone have any more ideas of what to check next? Also, the engine has a lot of movement and a rough idle (mounts appear to be okay).

    Anything that you can think to check would be greatly appreciated. Thanks in Advance!!

    Sarah
     
    Tacomagirl64, Feb 21, 2017
    #1
  2. Feb 21, 2017 at 9:37 AM
    #2
    Tacomagirl64

    #2
    Tacomagirl64 [OP] Well-Known Member

    Joined:
    Sep 4, 2010
    Member:
    #42712
    Messages:
    875
    Gender:
    Female
    First Name:
    Sarah
    Phoenix, Arizona
    Vehicle:
    2003 Tacoma SR5 3.4L
    King Coilovers 3", AllPro upper control arms, fabtech rear shocks, Avis Offroad Bed rack and roof rack, Avid sliders, Ulta 16" Baja wheels and 285/75/16 KO2s
    Here are the codes:

    P0302
    Cylinder 2 misfire
    P0300
    Random/multiple cylinder misfire

    From what I can tell it appears to be more injector related but still not sure. Any thoughts?
     
    Tacomagirl64, Feb 21, 2017
    #2
  3. Feb 21, 2017 at 10:57 PM
    #3
    Husky Driver

    #3
    Husky Driver Kyna's chauffeur

    Joined:
    Apr 17, 2014
    Member:
    #127883
    Messages:
    729
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    Male
    First Name:
    Kipp
    40°35'09.0"N 105°04'38.3"W
    Vehicle:
    2k T4R3 SR5 (Sport Edition Highlander SX) TRD
    Toytec Ultimate 3" lift susp w/ OME 891 rear coils, Bilstein 5100 shocks front & 5125 rear, ARB 'Roo Bar, Warn VR10k, 0.7, 2 & 11-meter 2 way radios, Nitrogen inflated 33" BFGoodrich All-Terrain T/A KO2s, FlexFuel E-85 conversion, AFe lifetime filter, Savage Offroad rock sliders, Ryno All Terrain 4.5mm skid plates, Line-X coatings on the armor, LifetimeLED & Rigid Industries LED headlights, UltraGauge 1.2, T3q 4.10 eLocker with armor from LROR, AmsOil lubricants used throughout. CBI plate rear bumper with swingaway, SPC Light Racing UCAs, ARB SS170HF Safari snorkel w/ Afrikaans centrifugal pre-cleaner, Tacoma antenna mod, TRD Supercharger w/ URD 7th inj. & URD pulleys, Anti-Dark engine bay lighting system. Having gone 250k, Aug 2016 was the time to replace the original clutch & get the driver's seat rebuilt/stuffed. Front & back Weathertech liners. Tundra front disc brake swap. Full length Rocky Mountain Rack with 40" lightbar & alternating strobe rear dust lights. I used a warm weekend in March 2022 to finally install my brand new, from old stock, 2000 4Runner driver's seat. $800 directly from the factory in Sapporo, Hokkaido, Japan.
    Husky Driver, Feb 21, 2017
    #3
  4. Feb 22, 2017 at 5:09 AM
    #4
    Tacomagirl64

    #4
    Tacomagirl64 [OP] Well-Known Member

    Joined:
    Sep 4, 2010
    Member:
    #42712
    Messages:
    875
    Gender:
    Female
    First Name:
    Sarah
    Phoenix, Arizona
    Vehicle:
    2003 Tacoma SR5 3.4L
    King Coilovers 3", AllPro upper control arms, fabtech rear shocks, Avis Offroad Bed rack and roof rack, Avid sliders, Ulta 16" Baja wheels and 285/75/16 KO2s
    I haven't...did you have the same sort of acceleration and loss of power issue before changing yours?

    I will get those changed and see if that helps. Thank you!!
     
    Tacomagirl64, Feb 22, 2017
    #4
  5. Feb 22, 2017 at 3:43 PM
    #5
    Husky Driver

    #5
    Husky Driver Kyna's chauffeur

    Joined:
    Apr 17, 2014
    Member:
    #127883
    Messages:
    729
    Gender:
    Male
    First Name:
    Kipp
    40°35'09.0"N 105°04'38.3"W
    Vehicle:
    2k T4R3 SR5 (Sport Edition Highlander SX) TRD
    Toytec Ultimate 3" lift susp w/ OME 891 rear coils, Bilstein 5100 shocks front & 5125 rear, ARB 'Roo Bar, Warn VR10k, 0.7, 2 & 11-meter 2 way radios, Nitrogen inflated 33" BFGoodrich All-Terrain T/A KO2s, FlexFuel E-85 conversion, AFe lifetime filter, Savage Offroad rock sliders, Ryno All Terrain 4.5mm skid plates, Line-X coatings on the armor, LifetimeLED & Rigid Industries LED headlights, UltraGauge 1.2, T3q 4.10 eLocker with armor from LROR, AmsOil lubricants used throughout. CBI plate rear bumper with swingaway, SPC Light Racing UCAs, ARB SS170HF Safari snorkel w/ Afrikaans centrifugal pre-cleaner, Tacoma antenna mod, TRD Supercharger w/ URD 7th inj. & URD pulleys, Anti-Dark engine bay lighting system. Having gone 250k, Aug 2016 was the time to replace the original clutch & get the driver's seat rebuilt/stuffed. Front & back Weathertech liners. Tundra front disc brake swap. Full length Rocky Mountain Rack with 40" lightbar & alternating strobe rear dust lights. I used a warm weekend in March 2022 to finally install my brand new, from old stock, 2000 4Runner driver's seat. $800 directly from the factory in Sapporo, Hokkaido, Japan.
    I had some unusual misfire error codes that would turn on the CEL & then reset itself. I changed out the coils & they went away.
     
    Husky Driver, Feb 22, 2017
    #5
  6. Oct 16, 2017 at 11:27 AM
    #6
    BeLance89

    #6
    BeLance89 Well-Known Member

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    Brandon
    Huntsville, AL
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    2002 White TRD double cab
    Did you ever figure this out? I'm having the exact same issue as OP with the P0300 code. It's also difficult to start after sitting overnight. I'm getting about 14-15 MPG, and it's driving me nuts. So far i've:

    Seafoamed: brake booster vacuum
    Seafoamed: in gas tank
    Replaced fuel filter
    Replaced spark plugs with NGK dual ground electrode
    Replaced K&N drop in filter with regular filter
    Replaced Plug wires
    Replaced coil pack on Cylinder 1 & 3
    Replaced Charcoal canister and Evap purge valve
    Cleaned MAF
    Cleaned Throttle Body

    Any suggestions?
     
    BeLance89, Oct 16, 2017
    #6
  7. Oct 16, 2017 at 11:30 AM
    #7
    Tacomagirl64

    #7
    Tacomagirl64 [OP] Well-Known Member

    Joined:
    Sep 4, 2010
    Member:
    #42712
    Messages:
    875
    Gender:
    Female
    First Name:
    Sarah
    Phoenix, Arizona
    Vehicle:
    2003 Tacoma SR5 3.4L
    King Coilovers 3", AllPro upper control arms, fabtech rear shocks, Avis Offroad Bed rack and roof rack, Avid sliders, Ulta 16" Baja wheels and 285/75/16 KO2s
    I did all the same things you mentioned above and it is running much better. Still a bit sluggish, but I think it has to do with the manifold being cracked.
     
    Tacomagirl64, Oct 16, 2017
    #7
  8. Oct 16, 2017 at 11:30 AM
    #8
    Tacomagirl64

    #8
    Tacomagirl64 [OP] Well-Known Member

    Joined:
    Sep 4, 2010
    Member:
    #42712
    Messages:
    875
    Gender:
    Female
    First Name:
    Sarah
    Phoenix, Arizona
    Vehicle:
    2003 Tacoma SR5 3.4L
    King Coilovers 3", AllPro upper control arms, fabtech rear shocks, Avis Offroad Bed rack and roof rack, Avid sliders, Ulta 16" Baja wheels and 285/75/16 KO2s
    Fuel pump!!

    That was the other thing we did!
     
    Tacomagirl64, Oct 16, 2017
    #8
    BeLance89 likes this.
  9. Oct 16, 2017 at 11:38 AM
    #9
    BeLance89

    #9
    BeLance89 Well-Known Member

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    Did it make a noticeable difference after you did the fuel pump? BTW, Thanks for the quick reply on this!
     
    BeLance89, Oct 16, 2017
    #9
  10. Oct 16, 2017 at 11:40 AM
    #10
    Tacomagirl64

    #10
    Tacomagirl64 [OP] Well-Known Member

    Joined:
    Sep 4, 2010
    Member:
    #42712
    Messages:
    875
    Gender:
    Female
    First Name:
    Sarah
    Phoenix, Arizona
    Vehicle:
    2003 Tacoma SR5 3.4L
    King Coilovers 3", AllPro upper control arms, fabtech rear shocks, Avis Offroad Bed rack and roof rack, Avid sliders, Ulta 16" Baja wheels and 285/75/16 KO2s
    It really did. It is still somewhat sluggish, but no where near where it was!!
     
    Tacomagirl64, Oct 16, 2017
    #10
  11. Oct 16, 2017 at 11:42 AM
    #11
    Tacomagirl64

    #11
    Tacomagirl64 [OP] Well-Known Member

    Joined:
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    875
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    Female
    First Name:
    Sarah
    Phoenix, Arizona
    Vehicle:
    2003 Tacoma SR5 3.4L
    King Coilovers 3", AllPro upper control arms, fabtech rear shocks, Avis Offroad Bed rack and roof rack, Avid sliders, Ulta 16" Baja wheels and 285/75/16 KO2s
    The other thing we used was that oil restore. Worked great
     
    Tacomagirl64, Oct 16, 2017
    #11
  12. Oct 16, 2017 at 11:46 AM
    #12
    BeLance89

    #12
    BeLance89 Well-Known Member

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    2002 White TRD double cab
    Do you remember which oil restore you used? I'm definitely gonna get a new fuel pump. i had a feeling it was time with it having 280K on it. lol
     
    BeLance89, Oct 16, 2017
    #12
  13. Oct 16, 2017 at 11:48 AM
    #13
    Tacomagirl64

    #13
    Tacomagirl64 [OP] Well-Known Member

    Joined:
    Sep 4, 2010
    Member:
    #42712
    Messages:
    875
    Gender:
    Female
    First Name:
    Sarah
    Phoenix, Arizona
    Vehicle:
    2003 Tacoma SR5 3.4L
    King Coilovers 3", AllPro upper control arms, fabtech rear shocks, Avis Offroad Bed rack and roof rack, Avid sliders, Ulta 16" Baja wheels and 285/75/16 KO2s
    The silver can!l with red and blue stripe. You'll know it when you see it!!

    Yeah fuel pump made a big difference, I recommend doing it regardless with that many miles :)
     
    Tacomagirl64, Oct 16, 2017
    #13
  14. Oct 16, 2017 at 11:51 AM
    #14
    BeLance89

    #14
    BeLance89 Well-Known Member

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    Brandon
    Huntsville, AL
    Vehicle:
    2002 White TRD double cab
    BeLance89, Oct 16, 2017
    #14

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