Author Topic: Steering wheel vibration  (Read 39192 times)

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Offline cal16v

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Re: Steering wheel vibration
« Reply #90 on: May 31, 2019, 23:06:24 PM »
Did you remove the bearings?

Offline electric geen

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Re: Steering wheel vibration
« Reply #91 on: June 10, 2019, 20:36:38 PM »
Your bearings will indicate by mileage whether they should be replaced.

The Calibra setup is very old fashioned small diameter and bad design for side loading. Previous comment on the steering knuckle (bearing housing) is important if everything else has been ruled out. These can be deformed by kerbing, even the ball bearings can be crushed and flat sided. If you had the leg off -  for the price of the bearings to be pressed out and new pressed in and if the Calibra was high mileage might have been a good idea if it had to be done eventually.

You will never gauge the bearings wear when they are cold, when cold any movement is a sign of the start of a bearing collapse. As a mechanical engineer you would know that vibration turns to audible frequency that you can hear and feel, if the problem is at 90kmh there is a sound? the frequency of that sound in Hz is the revolutions of what is worn - lets hope it´s not your differential (pinion) which is turning around 3.46 times faster than your wheels. it is a rotational problem you have and not a clunk (which is top mounts)?

I have a rear bearing that starts whining after 2 hours at 60+ mph, just as everything has heated up to maximum. otherwise you would never notice everyday.

Offline wim_vg

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Re: Steering wheel vibration
« Reply #92 on: October 18, 2019, 08:46:39 AM »
So... after some time, coming back to my favorite topic :)

I have replaced the Bilstein shocks with Monroe ones. These are much softer and have improved the ride. Even with 18inch wheels it feels better too.

The one thing I still note now, is that there is a knocking sounf when turning sharp right. This happens mainly in reverse, but can happen sometimes (not always) when driving forwards while hitting a bump at slow speeds. There is nothing audible at any other time.

What could it be?

Offline wim_vg

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Re: Steering wheel vibration
« Reply #93 on: September 09, 2020, 17:52:38 PM »
I thought of reporting back one final time to inform about my findings. I think I managed to nail down the issue and hope it is resolved. One of the bolts on the steering coupling was sitting more loose than required for some reason. It did not cause any play in the steering, nor did it produce any noise whatsoever, but I suppose the looseness was sufficient to cause an uncomfortable feel.

True I spent few hundreds of euros switching other things that were not the cause (shocks, lowers arms, tie rods, 2nd hand steering gear)... but seen the mileage those may have come up sooner or later as well.

Cheers to all for the help!

Offline joedellosso69

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Re: Steering wheel vibration
« Reply #94 on: November 12, 2020, 12:24:33 PM »
Well, this thing happened to a lot of calibras and often was fixed by tightening the front wheel bolts to the front wheel hub using the recommended torque values (110 Nm).
When this is not done (for example ususing a pneumatic gun for tightening bolts or hand made tightening by putting on the spair tyre after a puncture) and the bolts are tightened to much, the hubs will bent and cause vibrations.
If one of two front wheel hubs are definitely distorted, you will have vibrations even if you use 110Nm of torque to tighten the bolts.

Another thing that causes vibrations are the omokinetic joints of the front wheel axels when they are waired.