car vibrates at about 75+ mph
#1
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like it says while driving at about 75 or mor mph, the car has a slight vibration. car has new u joints, tranny mount, driveshaft, rearend, torque arm etc... so i dont think it is in the drive line. i had a heat shield hitting my pipes so i thought that was it but once i removed the heat shield the same vibration was there. could be moter mounts???any ideas guys???? thanks
#3
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OP,
If you have 6 speed, drive at 75MPH in 4th and note if the vibe is there. If its vibe free, shift to 5th and note if its there, Then go to sixth and do the same thing.
If you are vibe free in 4th but detect vibes in 5th and 6th gears only, you have T56 wear and tear so go here:
https://ls1tech.com/forums/manual-tr...vibration.html
If you have 6 speed, drive at 75MPH in 4th and note if the vibe is there. If its vibe free, shift to 5th and note if its there, Then go to sixth and do the same thing.
If you are vibe free in 4th but detect vibes in 5th and 6th gears only, you have T56 wear and tear so go here:
https://ls1tech.com/forums/manual-tr...vibration.html
#6
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question mine does it as well, but when it was on the dyno we saw the wheels spining and shifting up and down slightly. Could this be caused by the gear as well or just the tire or wheels being bent. If so then I guess its just a fluke. The trans is out of the car getting a new ls7 clutch put in today, but i am already out 1800 im 2 scared to ask him to check the gears and raise my price lol My car has only 38k on it as well so I would hope its just the rim/tire.
#7
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tires have been balanced, and its a automatic car...you can hear this vibration. and feel it when u put ur hand on the floor. its not to bad but does get worse at higher speeds. i let off the gas and the vibration goes down a bit
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#17
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I have developed a vibration and somewhat of a thumping noise from the rear. Turns out my Panhard bar bushings, torque arm bushing and trans mount are all junk!
Something to look into
Best of luck
matt
Something to look into
Best of luck
matt
#19
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I chased this problem down in my last car. I could feel it in the steering wheel and *** of my seat.
Replaced springs (lowering kit) - didn't help
Replaced all ball joints -didn't help
Got it aligned and wheels balanced -didn't help
one day I got a power steering leak from the pressure line to the rack. So I had a friend replace the line and the rack...problem solved
Hope you find out what the problem is
Replaced springs (lowering kit) - didn't help
Replaced all ball joints -didn't help
Got it aligned and wheels balanced -didn't help
one day I got a power steering leak from the pressure line to the rack. So I had a friend replace the line and the rack...problem solved
Hope you find out what the problem is