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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > noise after Eibach coil install



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      04-18-2013, 05:54 PM   #1
J-RUE
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noise after Eibach coil install

I've searched and read tons of threads on the topic of front end strut noise. seems similar to the knock others have described and is significantly worse at low speeds, no noise when hitting bumps on the highway.

I've had them taken apart and verified they were put together correctly with all washers in the same place. They've been taken off and re-installed by 2 reputable performance shops and the knock is still there.

The last shop suggested it may be the strut mount or endlinks but wanted to see if there is anything else I should be looking at.

thanks all!
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      04-19-2013, 07:22 PM   #2
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Anyone?
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      04-23-2013, 01:12 PM   #3
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Does it happen while turning? If so your end links might be getting caught on an improperly mounted wheel speed sensor wire bracket.
If it only happens over bumps at slower speeds it could just be coil bind, but I'd expect coil bind to happen at pretty much any speed. Maybe you just can't hear it over the road noise?
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      04-25-2013, 06:25 PM   #4
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Quote:
Originally Posted by MikeR1994 View Post
Does it happen while turning? If so your end links might be getting caught on an improperly mounted wheel speed sensor wire bracket.
If it only happens over bumps at slower speeds it could just be coil bind, but I'd expect coil bind to happen at pretty much any speed. Maybe you just can't hear it over the road noise?
I hear it, and can almost feel it if that makes sense, mostly on un even roads at slow speeds. Also immediately after accelerating from a stop or slow down
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      04-25-2013, 07:00 PM   #5
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Quote:
Originally Posted by J-RUE View Post
I hear it, and can almost feel it if that makes sense, mostly on un even roads at slow speeds. Also immediately after accelerating from a stop or slow down
sounds like something with the springs binding up. It's not really anything to worry about
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      04-25-2013, 07:12 PM   #6
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Quote:
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sounds like something with the springs binding up. It's not really anything to worry about
Thanks..going to jack the car up and see if I see any spots that mind be binding.
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      04-26-2013, 10:39 PM   #7
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I hear it, and can almost feel it if that makes sense, mostly on un even roads at slow speeds. Also immediately after accelerating from a stop or slow down
On my old Infiniti G35 it was bad control arm bushings. The first 3 places(including the dealer) did not find it. An independent guy sniffed it out right away.
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      04-27-2013, 04:47 PM   #8
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Does this happen when you are driving over speed bumps or just driving in general?
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      04-28-2013, 04:24 AM   #9
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Quote:
Originally Posted by J-RUE View Post
I hear it, and can almost feel it if that makes sense, mostly on un even roads at slow speeds. Also immediately after accelerating from a stop or slow down

If lowered, suspension part can be knockin' against the body.

Did you align after reassembly?
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      04-28-2013, 07:34 AM   #10
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Quote:
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On my old Infiniti G35 it was bad control arm bushings. The first 3 places(including the dealer) did not find it. An independent guy sniffed it out right away.
I've had 2 shops look at it plus my boy whose a master tech and it appears the endlinks/bushings etc are fine.

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Originally Posted by natelam View Post
Does this happen when you are driving over speed bumps or just driving in general?
yup, speed bumps, accelerating from stop, and accelerating after slowing down. hear mostly at slow speeds.

Quote:
Originally Posted by CALWATERBOY View Post
If lowered, suspension part can be knockin' against the body.

Did you align after reassembly?
haven't done the alignment yet since I was waiting till i had the ride height I wanted.

thanks for the replies guys.
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      06-10-2013, 01:09 AM   #11
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Have you figured out what the issue was?
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      06-10-2013, 07:31 PM   #12
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Quote:
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Have you figured out what the issue was?
not yet...i recently changed both front strut mounts and added adjustable endlinks. noise seems a bit better but def still there. not sure what else i can do...
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      07-20-2013, 03:45 PM   #13
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Quote:
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not yet...i recently changed both front strut mounts and added adjustable endlinks. noise seems a bit better but def still there. not sure what else i can do...
thought i'd update this thread quickly....after adjusting the endlinks a bit more the noise is now gone, thank god!
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      07-21-2013, 09:22 AM   #14
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boink!
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