Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

3 Pages V  1 2 3 >  
 Reply to this topicStart new topic
> Steering Wheel Wobble at Speed, I'm out of ideas
LotusJoe
post May 16 2013, 06:44 PM
Post #1


Europa Twink Driver
**

Group: Members
Posts: 406
Joined: 30-November 09
From: Southern California
Member No.: 11,085
Region Association: Southern California
I am experiencing wheel wobble at freeway speeds. At around 60 the steering wheel wobbles, but you can drive through it. At about 70 it quits. I assumed it was a tire out of balance. So I rotated the the backs to the front. No difference. I then put a different set of tires on the car. Same issue. Then I switched yet another set of tires from the race car. Same issue. Unless I have 4 sets of tires that are out of balance I'm a bit perplexed. The entire front end has completely new everything. Any thoughts on where to check? (IMG:style_emoticons/default/confused24.gif)

New:
FreeMotion roller bearings on the arms
Bilstein Sport Shocks
Turbo Tie rods
New tie rod ends
New lower ball joints
New upper polly bushings
New wheel bearings
New Rotors
New Calipers
New bushings on the sway bar

(Everything is new)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
JawjaPorsche
post May 16 2013, 06:49 PM
Post #2


Advanced Member
****

Group: Members
Posts: 3,463
Joined: 23-July 11
From: Clayton, Georgia
Member No.: 13,351
Region Association: South East States
I assume you had the front end aligned after putting all those parts on? Just asking. (IMG:style_emoticons/default/biggrin.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
LotusJoe
post May 16 2013, 06:50 PM
Post #3


Europa Twink Driver
**

Group: Members
Posts: 406
Joined: 30-November 09
From: Southern California
Member No.: 11,085
Region Association: Southern California
QUOTE(JawjaPorsche @ May 16 2013, 05:49 PM) *

I assume you had the front end aligned after putting all those parts on? Just asking.

Yes
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
JawjaPorsche
post May 16 2013, 06:53 PM
Post #4


Advanced Member
****

Group: Members
Posts: 3,463
Joined: 23-July 11
From: Clayton, Georgia
Member No.: 13,351
Region Association: South East States
QUOTE(LotusJoe @ May 16 2013, 08:50 PM) *

QUOTE(JawjaPorsche @ May 16 2013, 05:49 PM) *

I assume you had the front end aligned after putting all those parts on? Just asking.

Yes


Crap, you are not making this easy to figure out. (IMG:style_emoticons/default/biggrin.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
914itis
post May 16 2013, 06:54 PM
Post #5


Advanced Member
****

Group: Members
Posts: 2,892
Joined: 9-October 10
From: New York City
Member No.: 12,256
Region Association: North East States
Get all four balanced by a good tire shop and you will be good to go.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Elliot Cannon
post May 16 2013, 06:56 PM
Post #6


914 Guru
*****

Group: Retired Members
Posts: 8,487
Joined: 29-December 06
From: Paso Robles Ca. (Central coast)
Member No.: 7,407
Region Association: None
Adjust the front wheel bearings. Sounds like they are loose.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
76-914
post May 16 2013, 07:10 PM
Post #7


Repeat Offender & Resident Subaru Antagonist
**********

Group: Members
Posts: 13,503
Joined: 23-January 09
From: Temecula, CA
Member No.: 9,964
Region Association: Southern California
(IMG:style_emoticons/default/agree.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Jeffs9146
post May 16 2013, 07:28 PM
Post #8


Ski Bum
****

Group: Members
Posts: 4,062
Joined: 10-January 03
From: Discovery Bay, Ca
Member No.: 128
Letting the car sit to long on your tires, maybe you have flat spots!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Bartlett 914
post May 16 2013, 07:34 PM
Post #9


Advanced Member
****

Group: Members
Posts: 2,216
Joined: 30-August 05
From: South Elgin IL
Member No.: 4,707
Region Association: Upper MidWest
QUOTE(Elliot Cannon @ May 16 2013, 06:56 PM) *

Adjust the front wheel bearings. Sounds like they are loose.

This happened to me. Running with them also damaged them. They weren't all that loose to begin with. Cheap easy repair.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
SirAndy
post May 16 2013, 07:35 PM
Post #10


Resident German
*************************

Group: Admin
Posts: 41,645
Joined: 21-January 03
From: Oakland, Kalifornia
Member No.: 179
Region Association: Northern California
QUOTE(scotty boy @ May 16 2013, 06:22 PM) *
Rubber steering coupler condition?

That usually doesn't translate into vibrations at certain speeds but rather the car "darting" left or right on its own.
But it can't hurt to check ...


Do you have wheel spacers?
One thing that i have noticed is that if the wheel spacers aren't 100% clean, they will act as if the wheel isn't balanced and give you vibrations at certain speeds.
(IMG:style_emoticons/default/idea.gif)
User is online!Profile CardPM
Go to the top of the page
+Quote Post
r_towle
post May 16 2013, 07:58 PM
Post #11


Custom Member
***************

Group: Members
Posts: 24,574
Joined: 9-January 03
From: Taxachusetts
Member No.: 124
Region Association: North East States
Steering rack?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
worn
post May 16 2013, 09:01 PM
Post #12


can't remember
****

Group: Members
Posts: 3,156
Joined: 3-June 11
From: Madison, WI
Member No.: 13,152
Region Association: Upper MidWest
QUOTE(LotusJoe @ May 16 2013, 04:44 PM) *

I am experiencing wheel wobble at freeway speeds. At around 60 the steering wheel wobbles, but you can drive through it. At about 70 it quits. I assumed it was a tire out of balance. So I rotated the the backs to the front. No difference. I then put a different set of tires on the car. Same issue. Then I switched yet another set of tires from the race car. Same issue. Unless I have 4 sets of tires that are out of balance I'm a bit perplexed. The entire front end has completely new everything. Any thoughts on where to check? (IMG:style_emoticons/default/confused24.gif)

New:
FreeMotion roller bearings on the arms
Bilstein Sport Shocks
Turbo Tie rods
New tie rod ends
New lower ball joints
New upper polly bushings
New wheel bearings
New Rotors
New Calipers
New bushings on the sway bar

(Everything is new)

On my 911 this turned out to be a form of bump steer cured by an elephant racing product. The car had been very lowered by a po. You don't mention ride height, so this is another thought.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
tomeric914
post May 16 2013, 09:55 PM
Post #13


One Lap of America in a 914!
***

Group: Members
Posts: 1,259
Joined: 25-May 08
From: Syracuse, NY
Member No.: 9,101
Region Association: North East States
Tighten the wheel bearings and then tighten them a little more than you would like. This assuming that they are in good condition and well greased to begin with.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
GaroldShaffer
post May 16 2013, 10:01 PM
Post #14


You bought another 914?
*****

Group: Benefactors
Posts: 7,622
Joined: 27-June 03
From: Portage, IN
Member No.: 865
Region Association: None
QUOTE(tomeric914 @ May 16 2013, 10:55 PM) *

Tighten the wheel bearings and then tighten them a little more than you would like. This assuming that they are in good condition and well greased to begin with.

(IMG:style_emoticons/default/agree.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Cap'n Krusty
post May 16 2013, 11:10 PM
Post #15


Cap'n Krusty
**********

Group: Members
Posts: 10,794
Joined: 24-June 04
From: Santa Maria, CA
Member No.: 2,246
Region Association: Central California
QUOTE(LotusJoe @ May 16 2013, 05:44 PM) *

I am experiencing wheel wobble at freeway speeds. At around 60 the steering wheel wobbles, but you can drive through it. At about 70 it quits. I assumed it was a tire out of balance. So I rotated the the backs to the front. No difference. I then put a different set of tires on the car. Same issue. Then I switched yet another set of tires from the race car. Same issue. Unless I have 4 sets of tires that are out of balance I'm a bit perplexed. The entire front end has completely new everything. Any thoughts on where to check? (IMG:style_emoticons/default/confused24.gif)

New:
FreeMotion roller bearings on the arms
Bilstein Sport Shocks
Turbo Tie rods
New tie rod ends
New lower ball joints
New upper polly bushings
New wheel bearings
New Rotors
New Calipers
New bushings on the sway bar

(Everything is new)


Well, first thing we need so we can help you is the production date of your car. 914s built after late '72 have hubcentric wheel mounting, earlier cars use the lug bolts to center the wheels. If you have the wrong wheels on the car, you'll have balance problems. Make sure the tires are round, and that the wheels are balanced on both the inner and outer planes. If those things don't help, come back for more. BTW, rear wheel balance can, in some instances, mimic front wheel balance on cars with this kind of suspension.

Good luck!

The Cap'n
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
L-Jet914
post May 17 2013, 12:02 AM
Post #16


Member
**

Group: Members
Posts: 237
Joined: 24-October 12
From: Davis, CA
Member No.: 15,080
Region Association: Northern California
I am having the same issues as Lotus. Now off to check all the fore mentioned items (IMG:style_emoticons/default/biggrin.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
GeorgeRud
post May 17 2013, 07:08 AM
Post #17


Advanced Member
****

Group: Members
Posts: 3,725
Joined: 27-July 05
From: Chicagoland
Member No.: 4,482
Region Association: Upper MidWest
Kind of a long shot, but you could also consider having the tires trued (shaved) to be sure they are actually round when mounted on your rims. However, not many tire stores still offer that service.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Steve Snyder
post May 17 2013, 08:35 AM
Post #18


Member
**

Group: Members
Posts: 241
Joined: 10-June 08
From: Graham, NC
Member No.: 9,158
Region Association: South East States
You might also want to ensure the four Allen bolts on your steering column dash bracket are nice and tight.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
brant
post May 17 2013, 08:37 AM
Post #19


914 Wizard
**********

Group: Members
Posts: 11,625
Joined: 30-December 02
From: Colorado
Member No.: 47
Region Association: Rocky Mountains
not a solution to your problem
but I don't like tight wheel bearings
I've seen tight wheel bearings fail at the track when everything gets hot and expands.

and I've seen them weld to the spindle, destroying the spindle when they fail...

if your using your brakes or creating lots of wheel heat then tight wheel bearings are your enemy

on a caually driven street car I'm sure they won't cause harm.
plus a gradual failure can be identified in the annual repacking

brant
User is online!Profile CardPM
Go to the top of the page
+Quote Post
6freak
post May 17 2013, 08:47 AM
Post #20


MR.C
****

Group: Members
Posts: 4,740
Joined: 19-March 08
From: Tacoma WA
Member No.: 8,829
Region Association: Pacific Northwest
QUOTE(Elliot Cannon @ May 16 2013, 05:56 PM) *

Adjust the front wheel bearings. Sounds like they are loose.

BINGO
(IMG:style_emoticons/default/smile.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

3 Pages V  1 2 3 >
Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

Display Mode: Standard · Switch to: Linear+ · Switch to: Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

- Lo-Fi Version Time is now: 19th May 2024 - 08:52 AM
Invision Power Board v9.1.4 © 2024  IPS, Inc.
All rights reserved 914World.com © since 2002
914World.com is the fastest growing online 914 community!
We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ...