Help Support Bigcoupe.com

thump/pop sound when steering

Post in this forum for topics relating to suspension, steering, and brakes

Moderators: bfons, GRNSHRK, ron

Post Reply
User avatar
Danny Wilde
Posts: 68
Joined: Wed Apr 18, 2012 8:44 pm
Location: Italy

thump/pop sound when steering

Post by Danny Wilde » Thu Apr 26, 2018 9:13 pm

Hi all! :D
Today for the first time while pulling out of a parking place I got a "thump" sound from the front end while steering right, no sounds whatsoever while cruising and making slight turns, once I got home I tried steering right and left while stationary and the occasional "thump" happened only while steering right…

As suggested in other posts I've read I checked (with a cold engine) the steering/brake fluid level and it's ok.
I should also point out that one year from now I have completely rebuild all the perishable parts of both front and rear axles and driveshaft, and the 6 has been cruising as smooth as velvet since then 8)

Any guesses on which could be the probable culprit?

Thanks as always for you kind help :D
cheers
Danny
9/1986 euro 635CSi manual Diamantschwarz

User avatar
Brucey
6 Series Guru
Posts: 9716
Joined: Fri Apr 09, 2004 7:17 am
Location: Cambridge, UK

Re: thump/pop sound when steering

Post by Brucey » Thu Apr 26, 2018 11:07 pm

some things to check

- strut top bearings/mounts
- control arm mountings/bolts
- spring seats
- ARB mountings
- steering box mountings (these are notorious for cracking)
- idler arm condition/mountings

if the sound resonates it is likely to be something in or near a spring

cheers
~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

User avatar
Danny Wilde
Posts: 68
Joined: Wed Apr 18, 2012 8:44 pm
Location: Italy

Re: thump/pop sound when steering

Post by Danny Wilde » Fri Apr 27, 2018 3:53 pm

thanks Brucey! :D Just went to my mech this morning and had a look underneath, and yes, the bracket of the steering box had unwelded itself from the beam below, will get it re-welded and report the results.
Thanks again!
Danny
9/1986 euro 635CSi manual Diamantschwarz

GRNSHRK
E12 Based Guru
Posts: 2450
Joined: Thu Apr 08, 2004 3:24 pm
Location: Sunnyvale (SF Bay Area) CA

Re: thump/pop sound when steering

Post by GRNSHRK » Fri Apr 27, 2018 4:14 pm

Danny, while that may work temporarily, what you really need is one of these [-o<

viewtopic.php?f=17&t=29407

Worth it's weight in gold =D>
:mrgreen:
Bobbo
1980 633 CSi
Cypress Green/Pearl Beige
2011 F10 528i
2005 E46 330 Ci ZHP Cabrio
Image

You can never have too many BMW's

User avatar
tschultz
Bigcoupe supporter
Posts: 2288
Joined: Wed Jul 07, 2010 10:54 pm
Location: Colorado
Contact:

Re: thump/pop sound when steering

Post by tschultz » Fri Apr 27, 2018 4:21 pm

It could be anything from the sway bar end links to loose tie rods to the actual steering box itself. Gotta get under there and look for what's loose. If nothing is loose, liek in my case, it turned out to be the steering box which had the adjustment screw too tight. I had to replace the steering box :x

GRNSHRK
E12 Based Guru
Posts: 2450
Joined: Thu Apr 08, 2004 3:24 pm
Location: Sunnyvale (SF Bay Area) CA

Re: thump/pop sound when steering

Post by GRNSHRK » Fri Apr 27, 2018 4:53 pm

Uh, Tom, think you missed this statement :-?
the bracket of the steering box had unwelded itself from the beam below
Just sayin' \:D/
:mrgreen:
Bobbo
1980 633 CSi
Cypress Green/Pearl Beige
2011 F10 528i
2005 E46 330 Ci ZHP Cabrio
Image

You can never have too many BMW's

User avatar
Danny Wilde
Posts: 68
Joined: Wed Apr 18, 2012 8:44 pm
Location: Italy

Re: thump/pop sound when steering

Post by Danny Wilde » Sun May 06, 2018 9:57 am

GRNSHRK and tschultz thanks for your advice :D , finally managed to get the bracket welded and all is ok again! That bracket reinforcement idea looks really good, definitely will do it if it happens again, unfortunately didn't have enough time to get it built this time round..
Thanks again guys,
another happy ending =D> \:D/
Danny
9/1986 euro 635CSi manual Diamantschwarz

87Shark
Posts: 74
Joined: Sun Mar 10, 2013 5:14 pm
Location: Peoria, AZ

Re: thump/pop sound when steering

Post by 87Shark » Sat May 12, 2018 3:53 pm

Just my 2 cents. DON'T WAIT to do the steering repair that Ed sells! It is an easy fix and if nothing else, gives you a good piece of mind feeling. I did mine about a month ago ( it wasn't broken, but I tend to drive it a little " aggressively". It is a worthwhile addition that should be done even if your car doesn't need it yet. Remember, we are dealing with almost 30 plus year old cars. :D

User avatar
Danny Wilde
Posts: 68
Joined: Wed Apr 18, 2012 8:44 pm
Location: Italy

Re: thump/pop sound when steering

Post by Danny Wilde » Sun May 13, 2018 11:12 am

thanks for you advice 87shark, as a matter of fact I have a very "cautious" driving stile 8-[ so I guess I'll stick with the "normal" bracket for the moment, but will definitely consider ordering one when the next order to Ed will be done!
Btw really appreciate your advice.. :-)
9/1986 euro 635CSi manual Diamantschwarz

User avatar
Danny Wilde
Posts: 68
Joined: Wed Apr 18, 2012 8:44 pm
Location: Italy

Re: thump/pop sound when steering

Post by Danny Wilde » Sun May 20, 2018 7:58 pm

Hi guys, here I am again :mrgreen:, after re-welding the bracket the thump sound while steering has been successfully healed. However another issue has arisen which had actually started while the thumping sound had initially showed up but I didn't heed it too much since I was focusing on the thump noise…

After making a full steer to the left or to the right the car stays slightly steered in either direction :-k, then it evens up after slighter steering (in either direction) while going straight..

As stated above one year from now I have completely rebuilt both front and rear axles and driveshaft, maybe there's still some part that needs replacing?

Thanks again for your invaluable help,
Danny
9/1986 euro 635CSi manual Diamantschwarz

ron
Senior Member
Posts: 4259
Joined: Sat Jul 10, 2004 11:35 am
Location: South Wales U.K.

Re: thump/pop sound when steering

Post by ron » Mon May 21, 2018 12:57 pm

Danny Wilde wrote:
Sun May 13, 2018 11:12 am
....but will definitely consider ordering one when the next order to Ed will be done!
I have another order from Ed coming this week. PM if you want one.
They are ALWAYS rustier than you thought!!!!!!
'88 High line.
'85 M #228
'85 M #207
'80 735i

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest