Results 1 to 8 of 8

pinging and knock sensor

This is a discussion on pinging and knock sensor within the General Help forums, part of the LSx Technical Help Section category; My car pings when at low rpms while ur giving it a lil bit of gas.. My 99 trans am ...

  1. #1
    Junior Member
    Join Date
    May 2007
    Location
    Ok
    Posts
    9

    pinging and knock sensor

    My car pings when at low rpms while ur giving it a lil bit of gas.. My 99 trans am throws the knock sensor code... My question is, can the knock sensor cause my car to ping, or is the pinging causing the knock sensor code?

  2. #2
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,519

    98 Formula
    06 duramax

    I'm a little confused here. It pings at low rpm with a little bit of gas? Sure you don't have an exhaust leak? Are you sure it's knock? Do you have a way to data log it? The knock sensor just "listens" for knock and then pulls timing. What sensor code are you throwing and have you washed the engine with a hose? Water has been known to collect under the intake and kill the knock sensors.

  3. #3
    Junior Member
    Join Date
    May 2007
    Location
    Ok
    Posts
    9
    ooo ok sorry for the bad description, Like say i am in 5th at a 30 or something very lower and i floor it, that would definately be a time it would ping(sounds like marbles bouncing around) Yes i have washed the engine before... So since it is throwing a knock sensor code, is that telling me the sensor is bad? the code is something like p0332 or near that...

  4. #4
    NY Representative Vertiviper's Avatar
    Join Date
    Feb 2006
    Location
    New York
    Posts
    552

    Red
    99 Trans Am, M6

    Quote Originally Posted by trey1010 View Post
    ooo ok sorry for the bad description, Like say i am in 5th at a 30 or something very lower and i floor it, that would definately be a time it would ping(sounds like marbles bouncing around) Yes i have washed the engine before... So since it is throwing a knock sensor code, is that telling me the sensor is bad? the code is something like p0332 or near that...
    In 5th at 30mph??!?!! Good lord downshift!

  5. #5
    Junior Member
    Join Date
    May 2007
    Location
    Ok
    Posts
    9
    LOL yes i know that would be ridiculous I was just giving an example of when it would happen...

  6. #6
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,519

    98 Formula
    06 duramax

    are you really loading the motor up that much or was that just an extreme example? Also, what grade of gas are you running and what if any mods do you have done?

  7. #7
    Junior Member
    Join Date
    May 2007
    Location
    Ok
    Posts
    9
    that was an extreme example. I am using 91 octane and it is bone stock.

  8. #8
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,519

    98 Formula
    06 duramax

    it would be nice to datalog it to see just how much knock you're seeing. If you're pulling a bunch of oil into the intake you *may* just have a build up of carbon causing the knock. You can do a search for "catch can" to find the solution to your oil in the intake although it's not a solution to stop the oil use, just to catch it before it gets to the intake. That just comes with the LS1's. An LS6 pcv system is also an option but more work than a catch can.
    I would replace those knock sensors since they're relatively cheap and not hard to do. 332 is the rear sensor but if you're already down that far I would probably just replace both.
    I would also run some seafoam through it to burn off any carbon build up. You can find seafoam at any parts store.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Help: Ls1 pinging and oxygen sensor issues
    By Exec57l in forum General Help
    Replies: 3
    Last Post: 08-27-2012, 09:22 AM
  2. knock sensor code with new knock sensors?
    By zaaronz in forum General Help
    Replies: 13
    Last Post: 02-27-2011, 07:26 AM
  3. will bad knock sensor knock down hp
    By zaaronz in forum General Help
    Replies: 11
    Last Post: 10-14-2010, 05:49 PM
  4. Question: Knock Sensor?
    By 5.7literMustangEater in forum GTO
    Replies: 10
    Last Post: 04-19-2009, 08:05 AM
  5. Knock Sensor/Oil Pressure Sensor Issue
    By Slow '99 in forum External Engine
    Replies: 1
    Last Post: 04-04-2007, 09:28 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •