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Steering Wheel Vibration at 70+

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Steering Wheel Vibration at 70+

 
Old 01-08-2019, 05:56 PM
  #26  
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So i purchased new upper control arms. They are pretty cheap. While i was in i wanted to check ball joints of tie rods.
Tie rod ends seem pretty good and stiff but the inner tie rods seem very loose.
Shouldn't they be able to hold themselves up?

I made a video
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Old 01-08-2019, 07:12 PM
  #27  
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Once you remove the put from the steering knuckle they will sag down with gravity... they should have movement as the inner tie rods job is to move up and down as the wheel does the outer takes more of the force and deals with the horizontal movement from steeeing. Usually the inners take a long time to wear out and when they do they move less or bind ... easiest way to check them is with them attached to the knuckle still apply a force in an outward motion from the rack you will feel a pop of clunk as you do
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Old 01-15-2019, 09:16 PM
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Well i replaced upper control arms. Passenger side was a b**** had to remove the oil cooler so i could access the bolt. Inner and outer tie rods both replaced. Vibration is still there but slightly.
If im turning the steering wheel for a turn i can hardly notice a vibration at freeway speeds. Do you think the play could be inside my steering rack or the column that connects to the rack?
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Old 01-16-2019, 05:11 PM
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Well just wanted to post i FIXED the issue. The car drives perfectly straight stiff steering now and no longer loose. Before i was fighting to keep my car in lane on the freeway. The car tracks perfectly straight now with no VIBRATION!!!

I Removed the steering rack lowered it down. tightened column connection and the connection at the steering rack. Wasn't that loose.
But i also tightened the big bolt on top of the steering rack which looked like someone did this before because of the marks on it.

The car drives amazing with all the new parts and no vibration im super happy
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Old 01-16-2019, 05:31 PM
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You changed the control arms as well? Did you go with the upgraded thrust arms if so?
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Old 01-16-2019, 08:05 PM
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I changed upper control arms. I didn't get the upgraded FCP euro ones. I didn't change lower control arms i checked them and they are still like new. I did change inner and outer tie rods. Inner tie rods didn't really need to be replaced but i now have lifetime warranty.
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Old 01-16-2019, 08:15 PM
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Sounds good was just curious if they had stiffened up the front much i guess Iíll know when I get around to installing them
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Old 01-17-2019, 06:24 PM
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Originally Posted by Black_Mercedes View Post
Hey guys,

So this is an on going issue ive had for the past two years. Been hunting and trying to figure out whats causing the car's steering wheel and seats to shake. At 67 Mph
there's no signs of vibration as soon as it hits 69-70 steering wheel shakes and the passenger seat has a noticeable shake to it as well.

This last year i replaced
Engine Mounts & Transmission mounts about 3k miles ago
I just replaced the front rotors and pads.
Just installed new rear tires 50 miles ago
Front tires are still from when i got the car and had them re balanced about 14k miles on them ( Eagle LS2 ).
I'm about to buy new front tires because i've read many bad reviews on these tires. But before i throw more money away trying to fix this steering wheel shaking issue.

I asked discount tire to check if my rims are bent and they said they aren't but theirs a slight hop whatever that means. But not enough to cause shaking.

Is there anything else i should be looking at? I've tightened almost all suspension bolts and the bushings don't look bad the car has 72k miles on it now.

What should i take a look into flex discs do they go bad?

Should i just take it to Mercedes and get it diagnosed?

Thanks any input will help
Your wheel might be bent. Try to borrow some wheels off a friend that has a c class. If it goes away problem solved..
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