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Knock Sensor Replacement

Discussion in '2nd Gen. Tacomas (2005-2015)' started by avanasch, Aug 22, 2012.

  1. Nov 2, 2017 at 7:48 AM
    #41
    anphonic

    anphonic New Member

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    I'll add about to this story/information. I've got an '06 PreRunner with 211,000 miles and was recently wiring in a 7 way plug and brake controller (previous monkey jacked the factory harness up). I had to stop for the night as I was short on wire and the next morning, my cel popped on and she wouldn't shift into OD. I dropped yet off at the shop across the street for my office to have them check it out and do an oil change I hadn't made time for.

    P0333 was all they could pull up and recommended I took it to a transmission shop. (Fast forward a week of bad fuel mileage). Yesterday I finally got it by a shop at lunch and their better scanner had several codes but all pointed to wiring.

    So I went digging for information and found this post (after learning it was 1300+ from the shop to replace the sensor IF it was bad or 216 for the sensor and gasket set from a parts store).

    After I got home last night, I started tearing into it and using an endoscopic camera to look for the wiring.171101_192721.jpg a pesky rodent had climbed under the intake Wednesday night after I'd called it quits and taken liberties with the wiring. Luckily one of the local parts stores had ONE connector in stock for ~$10. Quick trip to town and back, bit of solder and some shrink wrap then it was time to button her back up. Oh, but it's also helpful to have someone with smaller hands (my wife) who can more easily reach under the coming pipe to unhook/hook up the connector. IMG_20171101_212427674.jpg IMG_20171101_212503065.jpg
    IMG_20171101_210937537.jpg IMG_20171101_205027461.jpg

    When you're removing the fuel rail, be mindful of dirt/debris sitting around them. I had pine needles and dirt dobber nests that I vacuumed up. Also be careful that you don't damage the injectors. You can set the whole assembly to one side after only removing the 2 bolts and unplugging the left side. Also if you're using an endoscope to check the wiring, look from the front rather than the rear. The plug ends on the sensors should be visible from the front.

    In all, it took just over 5 hours, $10 ($12 with tax) replacement connector, and my wifes smaller hands to get it fixed. I did use 2.5 cans of brake cleaner on the lower intake manifold as it was so filthy and I DID reuse the gaskets. Yes I know I should have replaced them but the lower 2 were still in excellent shape and came off clean and unwarped and the upper was still pliable.
     
    Last edited: Nov 2, 2017
    D21403 likes this.
  2. Jan 12, 2018 at 5:01 PM
    #42
    CorrosiveTendency

    CorrosiveTendency When up to your nose in shit, keep your mouth shut

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    Nathan S.
    Schuylkill Co, Pa
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    OME 885's, Locker Mod. Bilstein 5100's on 4 corners
    Revival! Threw a P0332 tonite. Why do all these posts seem to be rodents chewing these hard to reach wires and no other wires? For shits and giggles I added good gas since it was on empty and reset with my Ultragage ( thanks secret Santa from 2 years ago) CEL hadn't been back on in 25 mi. Could this ve caused by bad gas/moisture etc from not driving the truck often?
     
    D21403 likes this.
  3. Jan 13, 2018 at 10:30 AM
    #43
    elliott3

    elliott3 Unknown

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    It will come back. Mine would only come back after a hot restart. Cold start would never throw a light. Tested my sensor cold showed good. Hot it would not ohm right. Good luck.
     
  4. Jan 13, 2018 at 6:09 PM
    #44
    OKTACO

    OKTACO Well-Known Member

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    We see it a lot at the dealership one of our mechanics is really good at fishing the connector out and fixing it.

    By the book to replace the knock sensor the heads are supposed to come off
     
  5. Jan 14, 2018 at 2:11 AM
    #45
    jmich2001

    jmich2001 Well-Known Member

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  6. May 20, 2018 at 12:49 PM
    #46
    BarefootBandit

    BarefootBandit Well-Known Member

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    Had the P0332 code come up this morning.

    Didn't really notice any loss in power, however after I reset the code, when my truck is under load it sounds like a diesel engine. Not sure if it's just a coincidence. Hopefully it was just a nuisance code and does not come back up... looks like a labor intensive job.
     
  7. Oct 8, 2018 at 7:23 AM
    #47
    wchollif

    wchollif New Member

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    Does anyone know how to file a claim on this issue? Engine maintenance is not covered under Comp/Collision and Erie is saying they won't cover it. But, so many people here have said they got it covered...anyone know how to go about filing that claim?
     
  8. Oct 8, 2018 at 7:52 AM
    #48
    Ren

    Ren Well-Known Member

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    Jimmyh likes this.
  9. Oct 16, 2019 at 9:36 AM
    #49
    Philrab

    Philrab Curator of useless knowledge

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    Bunch of Basic Taco mods.
    Just adding another data point.

    Truck sat parked for four days while the family was away on vacation. Came back to a P0333. Reset it with my Scangauge, came straight back. Dealership confirmed rats had chewed the knock sensor harness. Filed a claim with USAA under Comprehensive.

    The dealer quoted me about $940 for my 2015, apparently there’s a pigtail harness for the knock sensors at least in the later years. I was tempted to tear into it myself but with a $250 deductible and rental coverage, I opted to let the dealer deal with it while I keep working.
     
    Jimmyh likes this.
  10. Oct 16, 2019 at 2:12 PM
    #50
    08TacoTrD

    08TacoTrD Well-Known Member

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    I didn't do anything special. I called my insurance and stated my problem and where the truck was. The dealer and insurance worked on it from there with me bouncing some info back and forth between the two.
     
  11. Oct 16, 2019 at 8:35 PM
    #51
    Philrab

    Philrab Curator of useless knowledge

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    Bunch of Basic Taco mods.
    To be specific.

    If the knock sensor went bad, that isn’t a Comprehensive insurance issue.

    If a critter chewed on your wiring, I would think that’s insurance worthy, unless they can point to some limiter in the policy that says otherwise.

    You need to get your mechanic to determine if rodent intrusion/destroyed wiring is the root of the problem, or simply a failed sensor.
     
  12. Oct 17, 2019 at 6:22 AM
    #52
    Larzzzz

    Larzzzz Grande' Ricardo

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    Aux back up lights, Bed lights, Re-located trailer plug, Good dooby, a.k.a. jumper cable mod, Heated seats, back up camera,
    Does anyone have the ECU connector/ pin locations for the knock sensors? I've replaced the drivers side sensor because I didn't see any chewed up wiring with a boroscope. I still got the code, P0333, coming back.
    Thanks
     
  13. Oct 17, 2019 at 8:23 AM
    #53
    Muddinfun

    Muddinfun Well-Known Member

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  14. Oct 17, 2019 at 10:56 AM
    #54
    Larzzzz

    Larzzzz Grande' Ricardo

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    Aux back up lights, Bed lights, Re-located trailer plug, Good dooby, a.k.a. jumper cable mod, Heated seats, back up camera,
    Thank you sir!
     
    Muddinfun likes this.
  15. Oct 19, 2019 at 9:08 PM
    #55
    Philrab

    Philrab Curator of useless knowledge

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    Bunch of Basic Taco mods.
    In other news, I doused a bit of cloth in peppermint oil and secured it under my battery tiedown, hoping that prevents the furry little SOB’s from coming back.

    What has everyone else done to prevent a repeat?
     
  16. Oct 19, 2019 at 9:19 PM
    #56
    08TacoTrD

    08TacoTrD Well-Known Member

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    Trapped and relocated over 4 dozen chipmunks. Need to do it again since the population has rebounded.
     
  17. Nov 17, 2019 at 5:45 PM
    #57
    D21403

    D21403 Member

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