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I have a vibration.

This is a discussion on I have a vibration. within the Drivetrain forums, part of the LSx Technical Help Section category; The trans mount was bad on my car and I had an energy suspension poly mount installed and now I ...

  1. #1
    Junior Member ramtough9's Avatar
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    Midnight Blue Metallic
    2000 Trans Am WS6 Conv.

    I have a vibration.

    The trans mount was bad on my car and I had an energy suspension poly mount installed and now I have a bad vibration that I can't figure out. It does it even when it is idleing. Does anyone have any ideas?

  2. #2
    None Shall Pass Knight's Avatar
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    99 WS.6 - Modified

    Any codes? Could be a dirty MAF - try cleaning it. Possibly a misfire as well.

  3. #3
    Junior Member ramtough9's Avatar
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    Midnight Blue Metallic
    2000 Trans Am WS6 Conv.

    It has been throwing codes like crazy but it is because I put a K&N filter in it a couple weeks ago. It started running like shit then I put in a regular filter in and it was fine for a day or two then it threw a code today and it is running lean on the left and right bank. I figured the car would regulate itself in a couple of days but the vibration was not there before the mount was put in and now it has shown up.

  4. #4
    None Shall Pass Knight's Avatar
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    Try cleaning the MAF first - K&Ns are known to throw oil on the MAF and cause problems. Then see what happens. If it's still acting up, check the tranny mount - maybe not installed correctly or broke.

  5. #5
    Moderator Cutlass's Avatar
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    I've heard the energy suspension poly mount needs to be modified to work properly. Its sits the trans up too high and screws up the driveshaft angles. Try doing a search and see if you can find the answer. I'll search later tonite when I have more time also to see if I can find it.

  6. #6
    Moderator Cutlass's Avatar
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    Here's a good explanation of the mods.
    mods for poly trans mount to eliminate driveshaft vibration

  7. #7
    Moderator 35th-ANV-SS's Avatar
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    If you are running lean on both banks, that sounds like a vacuum leak to me...which would also cause your car to shake/vibrate at idle.

    Your vibration under load though (cruising speed) sounds like either your poly mounts (what Cutlass said) or could even be your motor mounts possibly.

  8. #8
    Senior Member 98maro's Avatar
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    00 camaro ss M6 #6695

    My car has vibration when hit the gas or when Im doin a burnout.
    The dashboard vibrates so bab. And I can feel the transmission movin to sides
    I thought it could be the transmission mount, I tried to look for the transmission mount. Bt I can't find it
    Idk where it's located

  9. #9
    Junior Member ramtough9's Avatar
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    Midnight Blue Metallic
    2000 Trans Am WS6 Conv.

    Thank you for the information.

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