Vibrations: challenge mode
02-19-2008, 01:30 PM
#1
Vibrations: challenge mode My car vibrates, and when I say vibrates I mean it feels like your whole body is being attacked with that stupid thing the dentist uses to clean your teeth. Its a very high frequency vibration.
Recent changes:
A4->M6, added poly trans mount
Stock exhaust -> LM1
Swapped all 4 sway bar links for poly ones
Let me add that this is at highway speeds. If I accelerate SLOWLY up to 65-70ish theres no vibration at all, but if I gun it then it vibrates all the way to wherever I'm going. It doesn't seem to be related to the motor or exhaust, I tested this by putting it in neutral and killing the ignition. It happens no matter the gear, exactly the same. Anyone have any ideas? I thought it might be the driveshaft but all the weights are there still. Rear end going out?
Recent changes:
A4->M6, added poly trans mount
Stock exhaust -> LM1
Swapped all 4 sway bar links for poly ones
Let me add that this is at highway speeds. If I accelerate SLOWLY up to 65-70ish theres no vibration at all, but if I gun it then it vibrates all the way to wherever I'm going. It doesn't seem to be related to the motor or exhaust, I tested this by putting it in neutral and killing the ignition. It happens no matter the gear, exactly the same. Anyone have any ideas? I thought it might be the driveshaft but all the weights are there still. Rear end going out?
02-19-2008, 01:37 PM
#3
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A grumpy sometimes angry old man and his dog - Jake
02-19-2008, 03:05 PM
#4
I'll try that, I also have a spare driveshaft I can try. Also, I noticed that just by eyeballing it my rear axle seems to be a little farther forward on the passenger side. I don't know how to check if it is centered and straight though.
02-19-2008, 10:50 PM
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i had a similar problem in my car. from about 40 to 80/90 mph i could feel a bad vibration through my console and rear view mirror. then when i hit 90 i felt a whomp whomp whomp vibration through the gas pedal. so did some searching on here and it lead me to look at my driveshaft. so i took it in and the drive shaft was pretty bent. so i bought a used steel driveshaft for $100 at a salvage yard and its smooth as silk now...well kinda, i need to replace my 2 slightly bent rims.
