Author Topic: Steering wheel vibration  (Read 15071 times)

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Offline TURBOHEAD

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Re: Steering wheel vibration
« Reply #60 on: January 30, 2019, 12:15:55 PM »
Hi wim

It still remains a mystery as to the cause......and the nasty gremlin is stilll causing you problems.

I have been thinking.......have you checked the tightness of the Subframe Bolts because the Subframe as you know supports all the items you have checked so far.?

Apart from this I am truly at a losss.

Good luck

Turbohead

Offline wim_vg

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Re: Steering wheel vibration
« Reply #61 on: January 30, 2019, 22:52:23 PM »
Yeah it bites me to the point I do not like to drive the car anymore :(

Subframe bolts are fine actually.

I did notice something new/strange in the last days. I double-checked the front shock nuts during the weekend and found one end a bit looser, not sitting tight. The other end was fine. Today I checked again and the other end, which was fine before, had loosened a bit. Find that strange, but the after retightening the steering feels much better.

Any clues as to what can loosen that shock nut? There's actually a dish with another nut on top of it... both nuts are tight against one another... so how could it get loosened underneath?

Offline TURBOHEAD

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Re: Steering wheel vibration
« Reply #62 on: January 31, 2019, 11:09:56 AM »
Seems to me there is abnormal movement in the suspension etc.......nuts and bolts need to be tightened to the correct specification using a Torx Wrench.

I understand what you mean about not enjoying driving your car.?....when it gets to that stage it is really sad.

Offline wim_vg

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Re: Steering wheel vibration
« Reply #63 on: January 31, 2019, 11:24:17 AM »
Hmm yeah I fully agree. Actually I went through checking all bolted connections (tie rods, tie rod ends, drop links, lower arms, subframe...) and the shock nut was the only one that was off.

Funny thing is I checked the tightening with the torque wrench, but few days later it was sitting looser again for some unknown reason.

At least hopefully I now pinpointed the problem.
Best thing I could do I guess is to take the strut out and fully recheck it...

Offline TURBOHEAD

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Re: Steering wheel vibration
« Reply #64 on: January 31, 2019, 14:19:22 PM »
Great news wim

Sometimes the thread on the bolt or holding nut stripes and will as a result work loose. This should be checked to see if this is the case.

I would also consider using ......"Lock Thread" which is a type of glue and is used to assemble engine components.......this will ensure the nuts will not work loose in the future.

You will still be able to remove the nut or bolt using a spanner.......The product in U.K. Is called..."Locktite".


Offline CalibraNath

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Re: Steering wheel vibration
« Reply #65 on: February 02, 2019, 10:25:55 AM »
Steering wheel vibration can be a result of the front roadwheels getting bent or warped from impact with something solid like a kerb. I had the same problem with the driver's side strut nut loosening (either the garage didn't use threadlock or the poor state of the roads) so I raise the car, lift the dust boot using the road spring as a lever point, cut a small groove in the left side of a couple of the nut face sides & used a long screwdriver with a rubber hammer to knock it to the left which tightens it up.

Offline wim_vg

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Re: Steering wheel vibration
« Reply #66 on: February 03, 2019, 14:52:04 PM »
Cheers, I think my wheels are straight as far as I can tell... Front tyres are also new since last summer. Would this cause a shudder hitting bumps though?

I made today some more checks.

Lifted up the front end while standing still... cannot find any play in the subframe as far as I can tell. Are there any specific locations I should be checking? Just to avoid missing the obvious.

Also jiggled the front wheels left/right. This immediately and very easily spins the steering wheel. Is this normal? It looks a bit weird...

http://www.icone-music.be/files/Wheels.mp4

Cheers

Offline TURBOHEAD

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Re: Steering wheel vibration
« Reply #67 on: February 03, 2019, 17:55:19 PM »
Hi wim

The only movement if any would be caused by the large bolts that secure the Subframe would be if they have not been tightened properly.

To be sure you would need to re tighten the Subframe bolts to the specified Torx. .........there is another area to check is the two bolts one horizontal and one is virticle which bolts the lower arms to the Subframe.

The horizontal bolt goes through the lower arm front bush and is retained by a " Captive Nut " ........these Captive nuts can break loose causing the lower arm to move back and forth.......if this has happened you would hear a metallic clunking noise or rattle.......the Captive Nut is only spot welded inside the sub frame box section and due to rust can break off.

There is no danger of the front end of the lower arm coming offf ......but will if broken make noises........Sorry I am not able to send you any photo's to show you what I mean.

Last thing the round doughnut shaped bush the other end of the lower arm can deteriorate causing a loose fixing and that would also cause a clunking rattle type of noise.......if this was the case if you don't hear it when driving you may well feel it through to the steering wheel as you have previously described

Offline wim_vg

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Re: Steering wheel vibration
« Reply #68 on: February 10, 2019, 10:35:36 AM »
Thanks once more for continiung to provide me with good advice! Sorry to keep coming back to this over and over... consider it as a strong will to keep driving my beloved car ;)

As far as I can tell, just by attempting to turn the bolts in any direction, they are sitting tight. This goes for both the front and back lower arm bolts, as well as the subframe bolts that I showed on the pictures. Should I untighten and retighten to be sure? Not sure if there is any risk of doing that, so want to be sure...

Wish I could make a close-up video of how everything interacts in the suspension when hitting a bump :)

From what I can tell, I should also rule out bump steer. I think this would normally have to show as well when driving over a smooth bump, but it does not. The steering wheel only seems to shudder on 'impact'.

Cheers again!

Offline TURBOHEAD

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Re: Steering wheel vibration
« Reply #69 on: February 13, 2019, 21:48:16 PM »
Hi wim.

Don't worry about keep coming back with more questions.........we are as keen as you to try to resolve your problem.   You are very dedicated to your car and we can all understand that.    I have now reached a point that I cannot think of any thing else you can try. :-\

Do you know or have some friend that owns a Calibra so you could drive their car along the same route to see if it reacts to bumps etc.??
Have you been to your nearest Opel/Vauxhall dealer to see if they can help??

Sometimes a fault when driving can amplify the problem in ones mind because you are acutely aware of it every time you get into your car.

It would be valuable if you could get a mechanic to drive your car.....but don't tell him what you know of the problem........and see if after a test drive he comments about the same bumpy ride etc that you are experiencing. ??

So by not alerting him to what you know of the problem......he will comment independently. If that makes sense??

Good Luck.

Offline electric geen

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Re: Steering wheel vibration
« Reply #70 on: February 18, 2019, 19:30:36 PM »
Did you take any pictures of the top mounts when you changed the shocks and springs - they could be perished - mine are, are your shock absorber bump stops in place? The crashing when hitting bumps is usually shocks gone (or too weak for strong springs) or play in the top mounts (25 year old rubber).

Offline wim_vg

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Re: Steering wheel vibration
« Reply #71 on: February 19, 2019, 20:05:23 PM »
Yeah, did also change all of those... new top mounts, bump stops etc. Was basically a full strut overhaul (except the knuckle itself). Problem was there before though, so unfortunately seems unrelated.

Will keep on looking!

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Re: Steering wheel vibration
« Reply #72 on: March 10, 2019, 14:25:44 PM »
Hi all,

Here's another video of the steering wheel shake. Just in case I forgot to mention before, it is not an up/down shake, but a left/right juggle once I hit some kind of road bump. Basically, the road I'm driving on is a concrete (not asphalt) type road with a lot of very small bumps in it.

http://www.icone-music.be/files/Calibra/SteeringVibrationContinues.mp4

FYI, I had another DIY mechanic check out the car and he could not notice anything visually or play in the components... mystery continues.

FYI2, the other Calibra I have (1995 X20XEV) does not have the same issue. Not juggle or anything like that.

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Re: Steering wheel vibration
« Reply #73 on: March 11, 2019, 20:09:41 PM »
Hi wim

I played your recording  several times.....I know you have to loosen your grip on the steering wheel but I think it's more of a vibration that you are feeling ....and less visual movement.

In South Wales we have several concrete road surfaces.........and as soon as I drive from Tarmac to concrete I can als feel vibration through the steering wheel.

When stopping on the concrete road.......the surface is made up of ridges......a bit like corogated cardboard surface.  The concrete has this finish left after the road workers use a long wooden board which they tamp the wet concrete to level it leaving long ridges for extra grip.

May be this is the cause of your steering problems.

Sorry for my long winded explanation  :P

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Re: Steering wheel vibration
« Reply #74 on: March 12, 2019, 10:18:11 AM »
Hi,

Thanks. I do realize that this sort of road would give vibrations, though I would expect more up/down vibration instead of a left/right shudder.
That's basically what worries me :)

What does seem to help is further tightening up the drop links. I replaced these about a year ago. I always thought the rubbers were a little soft. Should these be hard and tightened really well? I am always scared of pulling the thread right out of the drop link (squeezed on plastic type).

Cheers