Page 1 of 8 123 ... LastLast
Results 1 to 10 of 76

Thread: Suspension noise diagnosis

  1. #1

    Suspension noise diagnosis

    I need to do the suspension refresh - plan on doing this one http://www.zhpmafia.com/forums/showt...miles-10-years however probably will skip the front control arms as those were done a while back - but haven't gotten around to it given a very short commute.

    I've noticed my car seems to make a knocking noise going over most bumps. A partially depressed manhole cover is a good example of something that would produce a slight knock/thud from the suspension, not the tire itself.

    Will this go away post-refresh most likely? Any likely suspects r.e. what's causing the noise?

    Thanks

  2. #2
    Is the noise from the front or the rear?

    If front, then could be fcabs, end links or the strut mounts

    If rear, then similarly could be rtabs, end links or the shock mounts themselves...




    Sent from my iPhone using Tapatalk


    2006 Coupe | Black Sapphire Metallic | Natural Brown | Gruppe M Intake | Corsa TSE3 | Michelin PSS on Apex ARC-8 | Koni Yellows |

  3. #3
    I'm inclined to say front. But since front is what hits the bump first maybe that's just what I hear more. Sounds like all of those items - with the possible exception of FCABs which I replaced not too long ago - are going to be replaced with the refresh so it should go away.

    Any Charlotte, NC located members with adequate tools want to help me with the DIY? Would love to learn about working on these cars and happy to make it worth your while.

  4. #4
    Join Date
    Nov 2016
    Location
    Charlotte, NC
    Posts
    2,722
    Quote Originally Posted by nsk040 View Post
    I'm inclined to say front. But since front is what hits the bump first maybe that's just what I hear more. Sounds like all of those items - with the possible exception of FCABs which I replaced not too long ago - are going to be replaced with the refresh so it should go away.

    Any Charlotte, NC located members with adequate tools want to help me with the DIY? Would love to learn about working on these cars and happy to make it worth your while.
    Uptown Charlotte checking in with more tools than time. You can borrow anything you need, but me finding the time to help is more difficult. Spenser is in South Charlotte and has a similar clunk that he's chasing. Maybe you guys could compare?

  5. #5
    Join Date
    Dec 2016
    Location
    Greensboro, NC
    Posts
    3,575
    As Pizza mentioned, I'm down in South Charlotte near Ballantyne. I'm starting operation suspension overhaul soon, and I too am chasing down a phantom sound. I have a couple ideas, but I'm happy to compare sounds and see if we can chase it down.
    Emma - 2005 BMW 330ci ZHP 6MT Estorilblau Individual

    Sportline 8s 18x8.5F - 18x9.5R | APEX ARC-8 18x8.5 Square | aFe Intake | 135i Brembo F/R Calipers | 26mm Front/20mm Rear Sway Bars | Z4 Mirror
    M3 Dead Pedal | Lexus ES300 Yellow Fog Light Retrofit | Koni Yellows/H&R Springs | Llumar CTX 40% | Coby Tri-Stitch Wheel & Boots

    Awaiting Install: M3 Wing Mirrors

  6. #6
    Join Date
    Feb 2014
    Location
    Picton, ON
    Posts
    6,000
    Quote Originally Posted by nsk040 View Post
    I need to do the suspension refresh - plan on doing this one http://www.zhpmafia.com/forums/showt...miles-10-years however probably will skip the front control arms as those were done a while back - but haven't gotten around to it given a very short commute.

    I've noticed my car seems to make a knocking noise going over most bumps. A partially depressed manhole cover is a good example of something that would produce a slight knock/thud from the suspension, not the tire itself.

    Will this go away post-refresh most likely? Any likely suspects r.e. what's causing the noise?

    Thanks
    hard to say without driving the car, but normal clunks are caused by:

    - a bad ball joint
    - a bad swaybar endlink
    - a bad strut or shock (depending on if the clunk is in the front or rear)

    if you're refreshing enough parts, you'll cure it.
    peter

    2018 Subaru BRZ RS 6MT

    2015 VW Golf TSI Comfortline 5MT

  7. #7
    Join Date
    Jan 1970
    Location
    Southern California
    Posts
    17,280
    FCABs can cause a clunking sound too.
    Randeaux/Rando/John/jr - '06 Cic ZHP; Southern California
    "ZHP or not, I still like you"


    ZHP Performance Package, Cold Weather Package, Leather, Jet Black/Black/BlackCube, NAV
    ESS Stage 1 Twin Screw Supercharger, Sprint Booster, BMW Perf Intake, Magnaflow Exhaust, Dinan TB & STEP S/W, Ground Control Coilovers, UCC Sway Bars, Apex EC-7 18x8.5 ET38
    Dynavin D99+, Hardwire V1 (w/V1 Connection), BSW Stage 1 Speakers, Kicker Amp/Subwoofer
    BMW Performance Strut Brace, Orion V2 Angel Eyes, No-holes License Plate, SMG Paddle Shift Mod, Besian VANOS, Gold DISA, Fan Delete, M3 Side Mirrors
    Note: Actual car no longer resembles signature picture

  8. #8
    Join Date
    Feb 2014
    Location
    Picton, ON
    Posts
    6,000
    Quote Originally Posted by johnrando View Post
    FCABs can cause a clunking sound too.
    generally for me they always generated a slight tug in the steering wheel under light braking, but no noise - i guess they would have to be REALLY bad to make noise.
    peter

    2018 Subaru BRZ RS 6MT

    2015 VW Golf TSI Comfortline 5MT

  9. #9
    About how long does it take to put in shocks/struts and all the associated hardware if I were to undertake this project with another member?

    Thanks

  10. #10
    Join Date
    Nov 2014
    Location
    Portland, OR
    Posts
    9,300
    The first time I did the shocks/struts it took me about two days on my car, but I was taking my time. When I did the same replacement on my sister's car it took me an afternoon. Having an impact wrench sped up the process immensely. Also, be sure to take pictures of the front strut assemblies i.e. the front strut with the strut mount and spring all together before you disassemble it. I made the mistake on my car of assembling the left strut with components for the right side...sort of. But it meant I had to completely disassemble the front strut assembly all over again.

Page 1 of 8 123 ... LastLast

Similar Threads

  1. Replies: 24
    Last Post: 06-26-2016, 02:28 PM
  2. Need help finding clunk noise, possibly in suspension
    By stephenkirsh in forum General -- ZHP Related
    Replies: 30
    Last Post: 01-19-2015, 03:37 PM
  3. Differential Diagnosis: FCAB vs Wheel bearings
    By TigerTater in forum Mechanical | Troubleshooting
    Replies: 17
    Last Post: 02-28-2014, 07:28 AM
  4. Oil leak and Vaccum Leak: Help to diagnosis?
    By BavarianZHP in forum Mechanical | Troubleshooting
    Replies: 10
    Last Post: 01-08-2014, 11:41 AM
  5. Replies: 23
    Last Post: 09-27-2011, 12:12 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •