Author Topic: Audi A4 (B7 3.2) steering shake  (Read 751 times)

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Offline Imraan Ali

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Audi A4 (B7 3.2) steering shake
« on: November 19, 2017, 08:32:09 am »
Hi new member

Needed some help with my Audi A4

I have a steering shake between 80-100km. Steering and front seats and even rear seats shake. Have done wheel alignment, wheel balance, rotated tyres, new shocks, New control arm bushes, New tyres and problem still is not going away. Super frustrating. All of the above is due to going to various workshops who have advised me to replace all the above. Serious $$$ spent and its still there. Audi told me slight bent in my wheels but arrow wheels said they are fine  :( :(.

Need some advice please guys and can I borrow some wheels for couple of hours to test if my wheels are truly stuffed??

Help please

Offline the phantom

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Re: Audi A4 (B7 3.2) steering shake
« Reply #1 on: November 19, 2017, 10:35:27 am »
check your inner cv joints
Land Transport New Zealand, taking the fun out of driving since August 2008

Offline 80 Vert

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Re: Audi A4 (B7 3.2) steering shake
« Reply #2 on: November 19, 2017, 12:20:45 pm »
Yep inner CV's worn
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Offline Imraan Ali

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Re: Audi A4 (B7 3.2) steering shake
« Reply #3 on: November 20, 2017, 05:49:24 pm »
Okay will check them again. Apparently Audi checked them and said no issues but will get them seen to again. Thanks

Offline sfkarl

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Re: Audi A4 (B7 3.2) steering shake
« Reply #4 on: November 21, 2017, 10:56:38 am »
I'm getting a similar vibration in my B6 A4. I haven't gone through the checklist of obvious faults yet, but this advice is good to know.

Planning to -
- balance the wheels
- check wheels for buckles
- check steering alignment
- inspect suspension components
- check for warped brake rotors
and also
- inner CV joints

Offline kiwihigh

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Re: Audi A4 (B7 3.2) steering shake
« Reply #5 on: November 21, 2017, 11:31:09 am »
Aftermarket wheels? maybe missing locating hubcentric rings.
BUILT not bought

Offline DTM

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Re: Audi A4 (B7 3.2) steering shake
« Reply #6 on: November 21, 2017, 04:12:45 pm »
Aftermarket wheels? maybe missing locating hubcentric rings.
I was thinking the same thing Even if they were all there they could be the wrong size fitted which happened to me many many years ago.

Offline the phantom

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Re: Audi A4 (B7 3.2) steering shake
« Reply #7 on: December 10, 2017, 12:01:48 pm »
any progress on this?
Land Transport New Zealand, taking the fun out of driving since August 2008

Offline sfkarl

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Re: Audi A4 (B6 3.0) quattro steering shake
« Reply #8 on: December 12, 2017, 08:09:20 pm »
So after some more driving I'm quite sure its the brakes seizing up. It's fine when cold, but after about 10km a shudder begins and builds quite strong. It is significantly worse if the brakes are applied.

The fuel economy takes a dive, the engine feels laboured. I have pulled over and all of the brake rotors are hot. Damn hot. Front left sizzling hot.

It's not just 1 seized caliper. I think the vent hole in the brake master cylinder is blocked, allowing pressure to build in the whole brake system and engaging the brakes. Which heats up the brake fluid and increases the pressure even more.

The rotors are in good condition but are possibly warped now. No telltale wear indicating a seized caliper.

I unplugged the ABS pump to test if that had anything to do with it. Made no difference. I also checked the brake fluid level in the reservoir to see if it had been overfilled. No fill line is on the reservoir and there was space in there. I loosen the cap to be sure it wasn't pressure building up in the reservoir itself. No effect.

So plan now is to remove and clean the master cylinder. I don't think there is anything wrong with the seals. I think its a blocked vent port possibly from dirty fluid being used. I think this because all 4 brakes are effected.

What say you?

Offline Gordo

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Re: Audi A4 (B7 3.2) steering shake
« Reply #9 on: December 31, 2017, 08:54:57 am »
I would say a very good chance you have hit the nail on the head - bit late responding but sometimes you can use a straightened paperclip to clear the relief/replentishment port.
When replacing master cylinders, it is possible to run into a problem with the new cylinder being slightly different in the pushrod length and not exposing the port* when brakes released - was caught by that on a Land Cruiser as an apprentice.

*As an aside, with care, you may be able to ride yourself of an over-long slack pedal by judicious use of spacers to minimise the piston travel after the port is exposed - after making sure there isn't excessive play elsewhere.
These are my thoughts and opinions - sometimes I'm wrong, but not often ;-)

Offline sfkarl

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Re: Audi A4 (B7 3.2) steering shake
« Reply #10 on: December 31, 2017, 09:24:51 am »
Thanks. I haven't gotten to this job yet. Have been working on other more important tasks but will report back here when I do.