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internal resonance

This is a discussion on internal resonance within the Firebird / WS6 forums, part of the Vehicle Specific category; driving home from work yesterday, i started hearing a vibrating in my car around 1600-1700 rpm. it just suddenly started, ...

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    Senior Member grouch0jr's Avatar
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    internal resonance

    driving home from work yesterday, i started hearing a vibrating in my car around 1600-1700 rpm. it just suddenly started, ie it didnt happen on the way to work, or ever before. i tried to figure out what it was, but wasnt in the car long enough. anybody else ever experience anything like this?

    how the hell do i delete a thread? i wanted to put this in the firebird section, but im an idiot.
    Last edited by grouch0jr; 02-29-2008 at 03:21 PM. Reason: wrong area?

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    Member jujofields's Avatar
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    I have the same issue...once i get up higher in rpm's though, the vibrating/resonance stops....I'm trying to figure out what's going on

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    Impounded
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    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    I think its from the drone of the engine.. ive got it too.

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    Member 2-bowties&abird's Avatar
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    blue 2000 ws6 m6

    mine does it really bad, straight pipes though. around 50ish it drones bad. once i get to 60 in 6th it mellows out.

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    Member jujofields's Avatar
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    Yeah, I just changed a lot of intake & exhaust components to aftermarket pieces and with the new, less restrictive setup the drone/vibration has increased.

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    someday joejenkinsglass's Avatar
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    Quote Originally Posted by grouch0jr View Post
    driving home from work yesterday, i started hearing a vibrating in my car around 1600-1700 rpm. it just suddenly started, ie it didnt happen on the way to work, or ever before. i tried to figure out what it was, but wasnt in the car long enough. anybody else ever experience anything like this?

    how the hell do i delete a thread? i wanted to put this in the firebird section, but im an idiot.
    sounds like it may be the u-joint

  7. #7
    Impounded
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    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    I know mine are bad.. Im taking out the driveshaft tomorrow if I wake up early enough..

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    someday joejenkinsglass's Avatar
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    Quote Originally Posted by JoshieDoom View Post
    I know mine are bad.. Im taking out the driveshaft tomorrow if I wake up early enough..
    dont put it off if it fails you may be in for a ride and the car may be a mess when your done

  9. #9
    Impounded
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    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    I know i work all the damn time so today is my only option to do so.. My outer tie rod end was so bad. I changed it yesterday.. Ujoints and a polished driveshaft comming up today... I threw the u joints in my truck after doing a burnout and it cost me a transfer case and a driveshaft..

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    someday joejenkinsglass's Avatar
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    sometimes the cheapest things cause the most damage

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    Member jujofields's Avatar
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    Quote Originally Posted by JoshieDoom View Post
    I know i work all the damn time so today is my only option to do so.. My outer tie rod end was so bad. I changed it yesterday.. Ujoints and a polished driveshaft comming up today... I threw the u joints in my truck after doing a burnout and it cost me a transfer case and a driveshaft..
    oh damn!

  12. #12
    Member jujofields's Avatar
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    As far as the squeaks and rattles inside the car, I'm sure a good set of SFCs would fix the problem....I doubt it'd do anything for internal resonance though LOL...

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    Senior Member grouch0jr's Avatar
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    my driver seats squeaks too, but its only when im squirming around.

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    Member jujofields's Avatar
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    Mine's the opposite: the passenger seat squeaks sometimes.

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    Senior Member grouch0jr's Avatar
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    i think its just because im fat, haha.

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    Don't know if this is your probem but I had a vibration noise that turned out to be the heat shield over the gas tank. There is another piece over the tail pipe that has a sheet metal tab that fits into the other heat shield piece. I used high temp RTV and forced it between the pieces. It's been fine with no resonance for more than 2 years.

  17. #17
    Member jujofields's Avatar
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    While doing some basic maintenance under my car last night, I took a look at all components of my exhaust system. I found that my cross brace was rubbing slightly on the Y-pipe. I took the brace off & bent it a little bit for clearance. After putting it back on and driving my car, some of the sounds I had been hearing were completely eliminated.

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