• Welcome to SVTPerformance!

Floorboard Knock

Discussion in 'Terminator Talk' started by termicrazy, Aug 15, 2019.

  1. termicrazy

    termicrazy New Member

    Messages:
    7
    Joined:
    Jul 23, 2018
    Location:
    texas
    Hey guys, I've got my terminator acting up. So when I am driving I am getting a considerable knock in my floorboards that can be felt there and through the pedals. I know that it doesn't have anything to do with the brakes or engine directly because no matter the speed or if i use the brakes I can still feel the knock. The only tricky part is that it isn't happening every time I drive the car. It occurs probably every other drive or so. Its also my daily right now. Its almost like something popping in and out of place. Please help!
    *EDIT*
    It only happens when moving, does not change with engine rpm, and seems to happen more on really hot days like this August in Texas has been.
     
    Last edited: Aug 21, 2019 at 3:26 PM
  2. hotcobra03

    hotcobra03 Well-Known Member Established Member

    Messages:
    6,021
    Joined:
    Mar 11, 2007
    Location:
    poteet,texas
    Trans mount broken?
     
  3. termicrazy

    termicrazy New Member

    Messages:
    7
    Joined:
    Jul 23, 2018
    Location:
    texas
    I'll have to see... i kinda hate getting under my car these days. It did not appear broken the last few times I was under there though.
     
  4. slo984now

    slo984now AKA 01yellerCobra Established Member

    Messages:
    14,716
    Joined:
    Oct 5, 2005
    Location:
    San Diego
    Unfortunately that's the only way you're going to figure out what the issue is. When it comes to weird noises we can give you ideas and places to look, but it's going to take a hands on approach to find it.

    Did you do any work last time you were under there?
     
  5. termicrazy

    termicrazy New Member

    Messages:
    7
    Joined:
    Jul 23, 2018
    Location:
    texas
    The last few times have been alternator swaps. I had a string of bad ones. I dropped the alt bracket each time and loosened the shield next to it and never fully refitted it, which could be a possible fix, but its no where near heavy enough to create the knocks that i feel in my opinion.
     
  6. slo984now

    slo984now AKA 01yellerCobra Established Member

    Messages:
    14,716
    Joined:
    Oct 5, 2005
    Location:
    San Diego
    My first thought was going to be an exhaust pipe possibly hitting. But I think I'm going to have to agree with hotcobra03 and say it's along the lines of a mount.
     
  7. 4sdvenom

    4sdvenom Never Enough! Established Member

    Messages:
    1,882
    Joined:
    Dec 2, 2003
    Location:
    Ft. Wayne, IN
    I know you said speed didn’t matter but does it get slower or faster with engine rpm?
    Does it knock if the car is sitting still or only when moving?
     
  8. hotcobra03

    hotcobra03 Well-Known Member Established Member

    Messages:
    6,021
    Joined:
    Mar 11, 2007
    Location:
    poteet,texas
    Tob
    This also can make pedals shake.

    I had one explode. It made the fork bang against transmission

    At first it was intermittent than just loud
    Sounded like a rod knock but
     
  9. GodStang

    GodStang Well-Known Member Established Member

    Messages:
    14,054
    Joined:
    Aug 20, 2003
    Location:
    Aiken, SC
    Ya I was going to say this also because I had this issue once. Of course depending on where on the floor board the knock is it could be many things.
     
  10. 4sdvenom

    4sdvenom Never Enough! Established Member

    Messages:
    1,882
    Joined:
    Dec 2, 2003
    Location:
    Ft. Wayne, IN
    I agree with the others.
    Definitely check the rubber on the motor mounts and transmission cross member to see if it’s torn or separated.
     
  11. 03cobra#694

    03cobra#694 Want to play a game? Staff Member Super Moderator

    Messages:
    48,696
    Joined:
    Aug 12, 2008
    Location:
    SW FL.
    I was thinking exhaust myself, but agree with the other posts.
     
  12. SVTdreamin04

    SVTdreamin04 What's a "Termi"??? Premium Member Established Member

    Messages:
    1,423
    Joined:
    Sep 20, 2015
    Location:
    America
    Throw out bearing on my car caused the same thing.


    Sent from my iPhone using Tapatalk
     
  13. BADBOYSVT

    BADBOYSVT Active Member Established Member

    Messages:
    461
    Joined:
    Dec 2, 2017
    Location:
    TX
    I had this happen on the old 02 camaro z28 . Peoples told me I got a rod knock . Take to muffler shop . Find out the exhaust banging again the floor board . They adjust it and it gone
     
  14. 03cobra#694

    03cobra#694 Want to play a game? Staff Member Super Moderator

    Messages:
    48,696
    Joined:
    Aug 12, 2008
    Location:
    SW FL.
    Lol
     
  15. JetmechF16

    JetmechF16 Under Pressure Established Member

    Messages:
    3,644
    Joined:
    Sep 14, 2006
    Location:
    League City, TX
    The trans mount to trans bolts on my car were loose when I bought it, made a clunking/knocking sound until I found the issue and tightened them up.
     
  16. Dave.O

    Dave.O Active Member Established Member

    Messages:
    311
    Joined:
    Apr 14, 2014
    Location:
    Houston
    Check IRS diff mounts

    I had lost one the front isolators and it made this noise
    I was open tracking mine tho


    Sent from my iPhone using svtperformance.com
     
  17. termicrazy

    termicrazy New Member

    Messages:
    7
    Joined:
    Jul 23, 2018
    Location:
    texas
    WOW. Lots of replies and i've got to investigate alot it seems. I appreciate the wisdom guys. ill let you all know soon.
     

Share This Page