 shaky suspension ?, all new but still slight shiver |
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| michelko |
 Nov 1 2005, 10:53 AM
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#1
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Senior Member  Group: Members Posts: 867 Joined: 30-November 03 From: Germany, Lambsheim Member No.: 1,404 Region Association: None  |
Hi everybody,
have a mysterious suspension problem. Sometimes on a bumpy road the car is shaking a bit side to side. Changed the tie rods to turbo style, mounted bump steer kit, adjusted the toe in to factory spec, every screw connection is fastened. what else can i do (check)? Any body know this problem or the remedy? I am sure it is not the bump steer problem!!! (IMG:http://www.914world.com/bbs2/html/emoticons/smilie_flagge6.gif) |
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| Aaron Cox |
Nov 1 2005, 10:58 AM
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#2
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: Corona, CA Member No.: 219 Region Association: Southern California |
was it aligned afterword?
is your car lowered? thus you used a bumpsteer kit? |
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| Joe Ricard |
Nov 1 2005, 11:04 AM
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#3
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CUMONIWANNARACEU Group: Members Posts: 6,811 Joined: 5-January 03 From: Gautier, MS Member No.: 92 |
Define shaky. like going over bump in curve and the wheel trys to jerk out your hands. or like shake and shimmy like tire out of balance or wheel bearing loose.
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| michelko |
Nov 1 2005, 11:15 AM
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#4
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Senior Member Group: Members Posts: 867 Joined: 30-November 03 From: Germany, Lambsheim Member No.: 1,404 Region Association: None |
it feels like the whole front of the car is moving from left to right. fast and short .
Not the shaking steering wheel if the car is lowered to much. The steering wheel is not moving while the symptom is happening. It is realy hard to explain (IMG:http://www.914world.com/bbs2/html/emoticons/dry.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/smilie_flagge6.gif) |
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| lagunero |
Nov 1 2005, 11:18 AM
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#5
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Donkey Member Group: Benefactors Posts: 1,042 Joined: 8-January 04 From: orange county,ca Member No.: 1,531  |
lug nuts tight? new tires grabbing grooves of road?
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| SLITS |
Nov 1 2005, 11:19 AM
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#6
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
Rain grooves in driving surface?
Shitty roads Poor quality / old tires tracking in ruts / grooves. Loose wheel bearings To much toe (neutral or out) Check rear trailing arm bushings for detoriation.. Check front bushings for same |
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| michelko |
Nov 1 2005, 11:39 AM
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#7
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Senior Member Group: Members Posts: 867 Joined: 30-November 03 From: Germany, Lambsheim Member No.: 1,404 Region Association: None |
tires are new.
wheel bearings not checked till now but no abnormal noise from them. Toe in adjusted to factory spec 20` (+- 10`) A-Arm buschings and trailing arm bushing not checked now. How is this done? (IMG:http://www.914world.com/bbs2/html/emoticons/smilie_flagge6.gif) |
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| michelko |
Nov 1 2005, 11:41 AM
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#8
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Senior Member Group: Members Posts: 867 Joined: 30-November 03 From: Germany, Lambsheim Member No.: 1,404 Region Association: None |
a forgot: anti roll bar in, no difference!
(IMG:http://www.914world.com/bbs2/html/emoticons/smilie_flagge6.gif) |
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| goose2 |
Nov 1 2005, 12:30 PM
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#9
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Senior Member Group: Members Posts: 976 Joined: 30-March 05 From: Eugene, Oregon Member No.: 3,847 Region Association: Pacific Northwest |
shocks?
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| Allan |
Nov 1 2005, 12:31 PM
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#10
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Teenerless Weenie Group: Members Posts: 8,373 Joined: 5-July 04 From: Western Mesopotamia Member No.: 2,304 Region Association: Southern California |
Bent wheel?
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| SLITS |
Nov 1 2005, 12:54 PM
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#11
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
For rears....put on lift....try to push wheels sideways...watch trailing arm attachment (especially the inner attachement) for movement For fronts, the same principle...but wheel would move more fore and aft around the torsion bar ends. You would have to carefully watch the attachment points The wheel bearing check is not noise....it would be rocking the wheel in a vertical plane to see if they were loose....grab top and bottom and try to rock them to see if there is any movement about the spindle. Hey, we're guessing here. You said the steering wheel doesn't shake...you said the car darts back and forth while holding a straight line.... Please correct me if I am wrong...... |
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| Joe Ricard |
Nov 1 2005, 01:06 PM
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#12
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CUMONIWANNARACEU Group: Members Posts: 6,811 Joined: 5-January 03 From: Gautier, MS Member No.: 92 |
Yea, I agree now it sounds like you need to go inspect stuff.
I bet loose wheel bearings followed by worn suspension: shocks, bushings or mounting points in that order. |
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| Thorshammer |
Nov 1 2005, 01:32 PM
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#13
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Senior Member Group: Members Posts: 749 Joined: 11-November 03 Member No.: 1,335 |
How wide are the front wheels and where is the caster set at???
Erik |
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| r_towle |
Nov 1 2005, 04:55 PM
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#14
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Custom Member Group: Members Posts: 24,705 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States 
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I chased a shimmy for quite a while...
I changed everything... I found two things. First was the bottom of the strut tube where the ball joint is installed, the round hole that the ball joint slides into was out of round...this created a wobble . The second was simple, but annoying. The rear of the torsion bars has a felt washer over it. It ensures that the torsion bar stays centered. Well, after 30 years, the felt is gone...I replaced it with a rubber washer. This stopped the clunk. Rich |
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| michelko |
Nov 1 2005, 11:33 PM
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#15
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Senior Member Group: Members Posts: 867 Joined: 30-November 03 From: Germany, Lambsheim Member No.: 1,404 Region Association: None |
Yes there is a little play if i rock the wheel in vertical. But i thought it´s normal my BMW makes the same thing and hasn´t the shaking. And yes, the steering wheel is stady, it is the body of the car that is moving from side to side (not front to rear). btw. thanks for all the tips. much work for the next weekend (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/smilie_flagge6.gif) |
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| michelko |
Nov 13 2005, 01:58 PM
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#16
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Senior Member Group: Members Posts: 867 Joined: 30-November 03 From: Germany, Lambsheim Member No.: 1,404 Region Association: None |
After some inspection of the suspension parts, changing (again) the shocks, allignement, wheel bearing etc. i can´t find anything wrong with the mechanic, so i think its a problem of the tub itself.
I read about a mercedes cabrio that made this shaky also when driving over a railway crossing. I purchased the Engmann-kit months ago, i will mount it over the winter. I am in the hope that this will cure the problem. Unfortunately i don´t know any other running 914 in the area to take a test drive (IMG:http://www.914world.com/bbs2/html/emoticons/dry.gif) . (IMG:http://www.914world.com/bbs2/html/emoticons/smilie_flagge6.gif) |
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| r_towle |
Nov 13 2005, 05:41 PM
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#17
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Custom Member Group: Members Posts: 24,705 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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vertical wheel shake on the front tires is the ball joint.
Have a friend shake the wheels while you feel the bottom of the strut tube...it was really hard to find, and really hard to feel, but a little wobble or shake in the lower ball joint will be drastic on the road... Rich |
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| Spoke |
Nov 13 2005, 10:31 PM
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#18
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Jerry Group: Members Posts: 7,158 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None
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Had the wandering thing also. Tie rod ends were shot, replaced with turbo tie rods, wandering reduced but not gone. Checked front end by jacking up one side at a time, and grabbing the wheel, shake back and forth, up and down and found out the ball joints were bad.
After new ball joints, things got much better, but still had some play which was from the wheel bearings not being tight enough. Tightened the bearings and now the car is nice and tight. Spoke |
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| michelko |
Nov 14 2005, 12:30 PM
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#19
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Senior Member Group: Members Posts: 867 Joined: 30-November 03 From: Germany, Lambsheim Member No.: 1,404 Region Association: None |
maybe that balljoint way is something i could try out bevore i throw it away (IMG:http://www.914world.com/bbs2/html/emoticons/huh.gif) . they are not too expensive. (IMG:http://www.914world.com/bbs2/html/emoticons/smilie_flagge6.gif) |
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| Eric_Shea |
Nov 14 2005, 12:39 PM
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#20
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PMB Performance Group: Admin Posts: 19,304 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains  |
Hey Rich... Check this out!
I agree with Rich. This is a problem that Porsche has recognized and posted in their Upfixen series. Early ball joints can wallow out the bottom of the strut causing exactly what you are describing. Also, sounds like you need to either tighten or replace your wheel bearings based on this comment...
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