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Old 11-18-2013, 11:00 AM
Mark DiSilvestro Mark DiSilvestro is offline
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Join Date: Jan 2001
Location: Alexandria, Virginia
Posts: 5,480
Quote:
Originally Posted by benhogan View Post
my w201 190td just got new tie rods, center drag, and a new alignment but the car shakes violently and intermittently at speeds between 55 and 65.

it does not happen all the time. it happens more when i go over bumps.

when I replaced the tie rods, i noticed the that driver's side motor mount was leaking. obviously needs to be replaced but the question is...is this the cause of the violent shake?

I have purchased the Lemforder motor mounts from Pelican and they should be in tomorrow.

Quick question, when I lift the motor up via the oil pan (on wood), can I do it one side at a time or do i have to loosen both mounts first? Is it really as simple as removing the top nut then raising the motor? I have never done this before.
I don't think it's a motor-mount.

Good idea to check the driveshaft flex-joints and center bearing, Usually a driveshaft vibration will be a much higher frequency rumble and by the time it becomes violent, you will notice it at speeds well below 55 mph.

If the vibration is at about the same frequency as the wheel rotation,
I'd first check for any loose front end parts and possible worn-out steering-damper. Then tire or wheel damage and out of round or out of balance.

I had an old Ponton 180 that stared shaking violently at about 20-40 mph whenever I hit a big bump. Would have to slow way down to get the oscillations to stop. Turned out it had a loose, broken steering-box mount.

Just be sure when you jack the motor, that nothing is binding, pinched or gets pulled too far.
Radiator, heater & AC hoses, cooler-lines, wiring, fan hitting fan-shroud, etc....

Happy Motoring, Mark
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Last edited by Mark DiSilvestro; 11-18-2013 at 11:13 AM.
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