Steering wheel shake - Chevelle Tech
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post #1 of 10 (permalink) Old Sep 4th, 15, 11:21 AM Thread Starter
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Ron
 
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Steering wheel shake

Long story but here goes. Between 37 and 43 mph my steering wheel shakes back and forth. Its not real bad but the wheel will move about 1/2" back and forth pretty rapidly it, does it at steady speed or accelerating or decelerating. As soon as I bought the car 5 years ago I changed to front disk brakes and replaced everything in the front steering and suspension, everything except the steering box. I cant say for sure if the car did this when I first bought it but it has done this since I changed everything. I had the rotors turned a while ago but it didn't change anything. I replaced both rear axles, didn't help. I have changed the wheels and tires several times, no change. I just checked and re-tightend the wheel bearings.
Could the steering box cause this? Any other ideas??

70 Chevelle SS396 (496) Straub roller, 700r4
69 Malibu convertible (sold)
95 Z28 Convertible T56 6 speed
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post #2 of 10 (permalink) Old Sep 4th, 15, 11:34 AM
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Re: Steering wheel shake

Maybe needs an alignment? Mine has a similar steering wheel shimmy that is on my list of bugs to work out.
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post #3 of 10 (permalink) Old Sep 4th, 15, 11:37 AM
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Re: Steering wheel shake

Do road condition or surface have any effect, one road type make it worse than another? What are the alignment specs used to set the front end? I have experienced a power steering gear that would cause pulling to one side or the other but not a back and forth motion. It could be possible if something has gone wrong in the spool section of the gear.

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post #4 of 10 (permalink) Old Sep 4th, 15, 11:42 AM Thread Starter
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Re: Steering wheel shake

Quote:
Originally Posted by Philip View Post
Do road condition or surface have any effect, one road type make it worse than another? What are the alignment specs used to set the front end? I have experienced a power steering gear that would cause pulling to one side or the other but not a back and forth motion. It could be possible if something has gone wrong in the spool section of the gear.
I have had the front aligned to stock specs twice in the last couple of years, no change. Road conditions don't affect it at all. Rough roads, smooth, curvy, its acts the same.

70 Chevelle SS396 (496) Straub roller, 700r4
69 Malibu convertible (sold)
95 Z28 Convertible T56 6 speed
TC #54 Gold



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post #5 of 10 (permalink) Old Sep 4th, 15, 12:49 PM
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Re: Steering wheel shake

Quote:
Originally Posted by ToocoolZ28 View Post
I have had the front aligned to stock specs twice in the last couple of years, no change. ....
That's part of the problem. Stock alignment specs are for bias-ply tires, which I am sure you are not using. Find an alignment shop that knows what they are doing.

For a street car go with 1/8" toe in, 0-.5 degree negative camber, and as much positive caster as they can dial in (2-4 degrees).

Andrew


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post #6 of 10 (permalink) Old Sep 4th, 15, 1:31 PM
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Re: Steering wheel shake

Rebalance the front tires and see what she does. Ask the tire guy to spin them first to see if it they are out before removing old weights.

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post #7 of 10 (permalink) Old Sep 4th, 15, 1:36 PM
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Re: Steering wheel shake

Has anyone adjusted the box or checked the rag joint??

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post #8 of 10 (permalink) Old Sep 4th, 15, 1:51 PM Thread Starter
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Re: Steering wheel shake

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Originally Posted by LeoP View Post
Has anyone adjusted the box or checked the rag joint??
No. The rag joint looks OK just by eyeballing it. I'm going to try adjusting the box today, a little at a time.
The tires have been re-balanced but I also put on all 4 wheels and tires off my other Chevelle, I eventually bought new front tires and put them on.
I know I'm missing something, I just cant figure out what it is.
Maybe some or one of the new parts I put on was bad but I cant see any play or looseness in anything. The front end guy that aligned it said he checked everything and he thought it looked good.

70 Chevelle SS396 (496) Straub roller, 700r4
69 Malibu convertible (sold)
95 Z28 Convertible T56 6 speed
TC #54 Gold



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post #9 of 10 (permalink) Old Sep 4th, 15, 4:38 PM
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Re: Steering wheel shake

Are you sure it's not in the drive line IE: Drive shaft, Torque converter, Flex plate/Flywheel, Harmonic balancer?
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post #10 of 10 (permalink) Old Sep 4th, 15, 6:01 PM Thread Starter
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Ron
 
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Re: Steering wheel shake

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Originally Posted by Toppless72 View Post
Are you sure it's not in the drive line IE: Drive shaft, Torque converter, Flex plate/Flywheel, Harmonic balancer?
I don't think so, I can feel it in the steering wheel only. I can see and feel the wheel rock back and forth. I wouldn't rule anything out though.

70 Chevelle SS396 (496) Straub roller, 700r4
69 Malibu convertible (sold)
95 Z28 Convertible T56 6 speed
TC #54 Gold



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