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Weird Noise when going over bumps

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Old 03-21-2013, 12:00 PM
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MattG37s
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Weird Noise when going over bumps

Hey guys recently Ive been hearing a noise when I go over speed bumps or deep dips in the road.. Its sounds like plastic or rubber rubbing together or getting crunched. And I think it coming from my front shocks or springs. I looked over the bottom of the car and i didnt see anything out of the ordinary... what do you think it is? or what could cause it??

Last edited by MattG37s; 04-17-2013 at 06:38 PM.
Old 03-22-2013, 01:42 AM
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nbdiver
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I posted on this recently and didn't really get a good answer from anyone. I have that same exact problem. Is yours intermittent or does it happen every time? Mine seems to be intermittent and I am thinking the temperature is a factor but I am not sure. Mine doesn't have a metallic sound but more of a squeak or squish sound to it. Very strange. Hopefully someone will come up with an answer.
Old 03-22-2013, 09:26 AM
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soundmike
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Can you guys post sound clips? One man's squeak is another man's clunk.

Both your descriptions sound almost like the issue i recently diagnosed.
Old 03-22-2013, 09:48 AM
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AMai1215
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I actually have been experiencing this for the last few months. My car has about 15K and makes some "squishy/squeeky" noise over certain bumps and dips. It sort of sounds like a plastic panel engine cover scrapping against the asphalt coming out of low driveways. The noise is coming from the front shocks. Sometimes only one side makes this noise over bumps, sometimes both. Since I hear it during the day and night over the same locations, I can say that temperature is not affecting it. Perhaps my sway bars need lubrication?
Old 03-22-2013, 09:57 AM
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mathnerd88
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One man's trash is another man's come up =D
Old 03-22-2013, 10:53 AM
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MattG37s
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I tried to upload the file but its not letting me.. The sound you are hearling is the same a scratching or squeaking noise.. Im taking it to the dealer ship today so i hope they can figure it out.
Old 03-22-2013, 11:11 AM
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Rochester
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Originally Posted by AMai1215
Perhaps my sway bars need lubrication?
Perhaps, but the OEM sway bar bushings aren't greased.
Old 03-22-2013, 11:11 AM
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AMai1215
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Rochester,
I should have mentioned earlier that I have on Hotchkis sway bars. Bushings could use more grease.

MattG37s, please keep us informed of what they find. If it's an Infiniti problem, then I should get mine checked out too.

Thanks!
Old 03-22-2013, 11:31 AM
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Rochester
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Originally Posted by AMai1215
Rochester,
I should have mentioned earlier that I have on Hotchkis sway bars. Bushings could use more grease.
Ah. Could be, then.

Do you re-grease those bushings on any particular interval? Time or mileage? I ask, because I've a set of Eibach sways that will be going on the car soon. If it ever stops snowing, that is. (Damn winter.)
Old 03-22-2013, 11:41 AM
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AMai1215
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I just had the Hotchkis sway bars put on when the car only had 6K miles. Close to 10k miles later and I haven't regreased them.

Can anyone with aftermarket sway bars chime in and give advice/recommendation to any particular intervals for regrease?
Old 03-22-2013, 11:47 AM
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terrycs
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From my experience, swaybars tend to "creak" when bushings need grease.

If it sounds like metal to metal contact (like exhaust hitting frame), look at sway bar end links as a possibility. They are notorius for failing on lowered cars, especially the stock end links.
Old 03-22-2013, 05:33 PM
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sneakers
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, had hotchkis sways for a year and it started to make noise and yes its the bushing thats needs silicone greasing. Its embarrassing when drive pass people and car makes that noise.

If you have ability to get underneath your car, guessing once a year. In my case, I might just buy the silicone and slip the mechanic $20 to do it for me every winter.

https://www.myg37.com/forums/brakes-...ar-grease.html

Last edited by sneakers; 03-22-2013 at 05:50 PM.
Old 03-22-2013, 06:43 PM
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soundmike
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If this is indeed your bushings, try this technique.

Wrap the area with plumbers tape before greasing the daylights out of it. It lasts longer. I use this trick of tape coupled with Amsoil Synth grease and haven't had the need to regrease in over a year (rears). The fronts i recently regreased since there was nothing else to do, it still had tons of grease there.
Old 03-22-2013, 08:31 PM
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sneakers
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Just a warning guys, some dealership might asses a diagnostic fee ($125) if the cause is not cover under warranty IE wear & tear issue, none factory item etc. Not debating if its right or wrong practice, I can see both side of the argument but for me I stop going to that dealership. If I was trying to get free service or get one over, then shame on me and deserve it but that was not my intention.
Old 03-23-2013, 12:58 AM
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2011G37JOHNBEST
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Originally Posted by sneakers
Just a warning guys, some dealership might asses a diagnostic fee ($125) if the cause is not cover under warranty IE wear & tear issue, none factory item etc. Not debating if its right or wrong practice, I can see both side of the argument but for me I stop going to that dealership. If I was trying to get free service or get one over, then shame on me and deserve it but that was not my intention.
well depends on if you are still covered under warranty..but INI only has 3 yrs..


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