What exactly is a knock sensor?

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  • čas přidán 8. 09. 2024
  • www.ktecgarage...
    Discord: / discord
    The money light is on for P0325!
    I will do my best to explain the operation of the knock sensor that is used in most modern vehicles and I will demonstrate on my 2000 Honda Accord how to easily switch one out.
    There are many ways to "skin the cat" and these are the methods that I use. Any criticisms or alternate methods posted in the comments are welcome, just keep it civil.
    Disclaimer:
    I am not a mechanic and do not warranty or guarantee any of the information contained in this video. Please follow all safety instructions included with the tools that you use and always wear eye and other necessary safety protection.

Komentáře • 48

  • @jsimmons3090
    @jsimmons3090 Před 2 lety +6

    sad u sold ur accord. u and your videos helped me rebuild the F23a1 motor in mine. you are appreciated..

    • @ktecgarage
      @ktecgarage  Před 2 lety +1

      Was kind of sad. The end of an era for me, really. Had it for 10 years and literally put blood and sweat into it. A young father purchased it and I'm glad that he now has a reliable ride.
      Thank you for the kind comment!

  • @michaelmilton8925
    @michaelmilton8925 Před 2 lety +3

    Your tutorials are incredible. I rebuilt my f22a1 with your how to. Finally bought factory manual , for start up fine tune procedure/wiring diagrams. I've moved on with another vehicle B18a1.

    • @ktecgarage
      @ktecgarage  Před 2 lety

      Thank you!
      The cool thing about these Hondas is that there isn't a giant learning curve working between the B, D, H or F series platforms other than the twin and single cams.

    • @kristapaul2872
      @kristapaul2872 Před rokem

      ​@@ktecgarage hey I'm about to put a timing belt and water pump on my accord. I'm gonna use your videos I just found your chanel and love the rebuild video I watched so far... I'm doing the rear main now just got the tranny dropped once that's done I'm going to the front side...

  • @matthewstone5429
    @matthewstone5429 Před 2 lety +2

    Best videos on CZcams. Rebuilt my f22a4 with your help. TOTALLY AWESOME!!!!

    • @ktecgarage
      @ktecgarage  Před 2 lety

      I'm glad to hear the series was helpful. Thank you!

  • @bmw-e30
    @bmw-e30 Před měsícem

    Well explained. Wondering how older engines compensated when they do not have a knock sensor to inform the computer to make adjustments. I recently changed a knock sensor on an Audi which solved the sluggish acceleration but the mechanic warned me that while the code reader showed a knock sensor fault, the problem could be something else like a faulty coil but luckily this was not the case.

    • @ktecgarage
      @ktecgarage  Před 23 dny +1

      I don't think they did anything to compensate. I remember having a new CR-X back in the day and it pinged like crazy on 87 octane.
      Thanks for the comment!

  • @willyjoerockhead
    @willyjoerockhead Před 2 lety +8

    I took my car to a muffler shop in Chicago because I had my check engine light on...They told me that I needed a new "knock sensor" ... They said they do not work on those. I have to take my car to a mechanic. I thought to myself...I thought you guys were mechanics.

  • @AmberHillman-rn8fu
    @AmberHillman-rn8fu Před 4 měsíci

    Thank you for let her put on the main media of what reading 😊

  • @TonyHustonATL
    @TonyHustonATL Před 6 měsíci +1

    Great explanation

  • @tammyrnwright3603
    @tammyrnwright3603 Před 9 měsíci +1

    Very helpful! Thank you

  • @AmberHillman-rn8fu
    @AmberHillman-rn8fu Před 4 měsíci

    Aclu mechanic watch out have her put you on the main media so they can find

  • @steveiliev8912
    @steveiliev8912 Před 4 měsíci

    Be aware!
    There are a lot of knock offs amongst the knock sensors!

  • @mrj9881
    @mrj9881 Před 2 lety +1

    where did you buy the rebuild parts or kit for the f23 your working on? I have a f23a5 (dx) that is burning alot of oil and getting ready to rebuild with some friends of mine.

    • @ktecgarage
      @ktecgarage  Před 2 lety

      Company named Evergreen Engine. I purchased their f23a1 kit from Amazon. Try eBay Motors as well.

  • @samuraideeper4844
    @samuraideeper4844 Před 2 lety +1

    Honda Accord F23. power window switch master n Ignition switch..

  • @jah-mek-yahtv973
    @jah-mek-yahtv973 Před 5 měsíci

    What would happen if the Valve adjustment gap is slightly too tight on any cylinder? Would that cause a knock?

    • @ktecgarage
      @ktecgarage  Před 5 měsíci

      Depending on whether it's is the intake or exhaust valve, it might cause backfires and/or misfires. Not sure about pre-ignition.

    • @waverider5751
      @waverider5751 Před 17 dny

      Usually if you go too tight on the exhaust valves, they have a chance of not fully seating on the face, and this will overheat the valves that aren’t fully closing.

  • @chikandalentlhabetse-hh1is
    @chikandalentlhabetse-hh1is Před 5 měsíci

    I have volvo s60 T4 1.6 ..2013 .fault code knock sensor. And has a black smoke when u start it idle good but after 1 min it start smoking pliz help

    • @ktecgarage
      @ktecgarage  Před 5 měsíci

      It the check engine light on for anything else?

  • @terrythomas790
    @terrythomas790 Před 5 měsíci

    Hi, Thanks I have a '02 Acura RSX, with the 3025 code, and 1457, which is emissions. Is it possible these inter related? And with a new sensor, Do you just use the factory replacement$$ or if an aftermarket one is OK, I see an aftermarket with a 3 yr replacement warranty. My local mechanic say aftermarket ok.?? Thanks

    • @ktecgarage
      @ktecgarage  Před 5 měsíci

      I had an aftermarket knock sensor that only lasted a year. OEM is usually best, but if you have a warranty and don't mind swapping it out, you should be fine. P1457 is a problem with the gas tank evap system and I don't see how that could be related.

    • @terrythomas790
      @terrythomas790 Před 5 měsíci

      @@ktecgarage Ok thanks! Both problems came up at around the same time, and thats why I asked. Actually I was hoping it was related lol
      Swapping the sensor it will require me to remove the intake manifold. I just put a new starter last year , and removed the manifold then to get to it. I used a new gasket as well then. Do I need to replace that as well , again? Just wanting to order everything together. Thanks!!

    • @ktecgarage
      @ktecgarage  Před 5 měsíci

      Ah. K series. If I did it myself, I'd try to reuse the gasket. The right thing to do is replace it.

  • @vinlectd4033
    @vinlectd4033 Před rokem

    Can I install a knock sensor on a honda block that doesn't have one? And where on the engine are alternative spots?

    • @ktecgarage
      @ktecgarage  Před rokem

      Maybe??? Honda puts them under the intake, so maybe you can find an unused mounting point and tap it to fit. I'm assuming you have a PCM that can read the signal and retard the timing.

  • @kristapaul2872
    @kristapaul2872 Před rokem

    What sensor is under the distributor cap on the block of 2001 2.3honds

  • @celli351
    @celli351 Před rokem

    What is the ohm reading supposed to be when testing this knock sensor?

    • @JosephDR
      @JosephDR Před 9 měsíci

      czcams.com/video/81TcN1UaptE/video.html

  • @EliasRizk53
    @EliasRizk53 Před 4 měsíci

    What if we drive without it

    • @ktecgarage
      @ktecgarage  Před 4 měsíci +1

      It will mess up your fuel economy and have lackluster acceleration.

  • @cgoldy45
    @cgoldy45 Před rokem

    I took out my throttlebody and pleum off and cleaned it put everything back together now car is running at high rpm its over 3,000

    • @ktecgarage
      @ktecgarage  Před rokem

      Throttle cable not adjusted right or a vacuum leak would be my 1st thoughts. Make sure you didn't miss a hose.

    • @cgoldy45
      @cgoldy45 Před rokem

      @@ktecgarage if was idling high with cables on and off

    • @ktecgarage
      @ktecgarage  Před rokem

      Ok. If it was idling normally before, then I would bet on a vacuum leak somewhere.

  • @forgetaboutitwillya.2981

    No! The accord is gone. Lol