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Old 06-12-2018, 10:22 PM   #1
niquemarshall
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Default Front end knock in 940 & driver side strut is stiff

Recently my 940 started knocking and clicking when going over bumps and uneven terrain. When applying the brakes, theres a rather loud "klunk" when slowing at low speeds. Its seems to coincide with the front end leaning, so if you pump the brakes, it will occur again and again, like a "ka-klunk"; this seems to be more pronounced in turns than anything. Also noticed when the wheel is turned to the right, the driver side corner is very stiff, as if it were a coilover. The passenger side bounces fine. Driver side will bounce if wheels are straight, but not if wheels are turned. Otherwise the car rides fine; this is an intermittent issue. Any ideas?

Cone bushings replaced in November (ipd blue)
Endlinks replaced in December
Ball joints replaced in 2016
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Old 06-12-2018, 10:52 PM   #2
white855T
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Recently dealt with the same issue. The strut mount bearings were binding. Once I replaced the bearings, the issue has now gone away. The strut mount could also be bad as well. The rubber will separate from the mount. I went ahead and replaced strut mount and bearings on both sides.

These are the parts I used because I had them already from another car.

https://www.fcpeuro.com/products/vol...40-960-s90-v90
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Old 06-13-2018, 10:43 AM   #3
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Originally Posted by white855T View Post
Recently dealt with the same issue. The strut mount bearings were binding. Once I replaced the bearings, the issue has now gone away. The strut mount could also be bad as well. The rubber will separate from the mount. I went ahead and replaced strut mount and bearings on both sides.

These are the parts I used because I had them already from another car.

https://www.fcpeuro.com/products/vol...40-960-s90-v90
Any tips on replacement? Or pretty easy
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Old 06-14-2018, 01:03 AM   #4
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Find out what the actual problem is. May be a strut mount bearing, may be a ball joint - and take it from someone who had one fail while driving a 940 you DO NOT want that to happen.

If you want to fix stuff yourself at least get a proper diagnosis first. The ball joint is a cheap repair for most shops to do, the bearing shouldn't be too bad either.
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Old 06-14-2018, 05:03 PM   #5
niquemarshall
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Originally Posted by Bready View Post
Find out what the actual problem is. May be a strut mount bearing, may be a ball joint - and take it from someone who had one fail while driving a 940 you DO NOT want that to happen.

If you want to fix stuff yourself at least get a proper diagnosis first. The ball joint is a cheap repair for most shops to do, the bearing shouldn't be too bad either.
Yeah I dont think it's the ball joint because those made different noises and showed different symptoms when they went bad. That's why they were replaced in 2016
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Old 06-14-2018, 05:06 PM   #6
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Quick Google search yielded this... https://www.google.com/amp/s/blog.fc...%3fhs_amp=true
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Old 07-10-2018, 05:41 PM   #7
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changed out the ball joint and strut bearing, no change. gonna try strut mounts and maybe struts next? seem ls much more pronounced when applying brake during a turn and letting off the brakes when the wheel is turned right only.
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Old 07-11-2018, 03:05 PM   #8
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Have you inspected the brakes and mounting H/W?
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Old 07-11-2018, 06:00 PM   #9
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My 1991 740 clunks. I had it in the air and didn't detect any blown bushings, but it was just a quick glance. 220k car. Prob needs everything.

I would start with racking the car in the air and inspect everything. Prybar can help reveal blown parts.

Have a friend turn the wheel while on the ground and see if you can crawl under and find anything.
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Old 07-11-2018, 06:24 PM   #10
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Did the steering loosen up? When my strut mount bearings were bad, they would bind up frequently.

Last edited by white855T; 07-11-2018 at 06:32 PM..
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Old 07-11-2018, 07:15 PM   #11
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I put URO strut mounts on my last 740. I slammed the gland nut on with my 1/2" impact. After that, my car would sometime pull to the side after a turn. I don't know if I damaged the parts or if they were junk to start with.

What's the good stuff right now for mounts?
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Old 07-11-2018, 07:16 PM   #12
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I would bet its internal to the damper, replace the strut inserts.
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Old 07-12-2018, 02:28 AM   #13
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Have you inspected the brakes and mounting H/W?
I haven't but I will. it does it when releasing the brake from a standstill
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Old 07-12-2018, 02:28 AM   #14
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Quote:
Originally Posted by ZVOLV View Post
I put URO strut mounts on my last 740. I slammed the gland nut on with my 1/2" impact. After that, my car would sometime pull to the side after a turn. I don't know if I damaged the parts or if they were junk to start with.

What's the good stuff right now for mounts?
I'm not sure but I was told that real friends dont let friends buy URO parts
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Old 07-12-2018, 02:31 AM   #15
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going to check the brakes and hardware. I noticed it clunks when you let off the brakes too when accelerating from a red light

also when rolling on a road with imperfections you can vaguely hear a muffled scuffing noise. its apparent that the strut isnt compressing from what I can tell. I want go swap them out as well but I wanna try mounts first as the car does clunk when turning wheel at low speeds
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