rear suspension clunk over bumps

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
robomatic12
Posts: 672
Joined: Sun Jul 12, 2009 12:05 pm
Car: 1990 300ZX TT

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It appears a lot of people have problems with a clunking noise coming from the rear of the cabin when going over bumps. It sounds like it is coming from high up and not an "outside" noise. I have jic coilovers installed. Is there anything you guys have found to solve this clunk?

So far things I'm going to check:-Retighten center coilover nut with impact gun-Sway bar bushings (but noise sounds higher?)-Spring rattle?
Modified by robomatic12 at 7:11 PM 2/19/2010


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tmeyer29
Posts: 848
Joined: Sat Mar 03, 2007 6:40 pm
Car: 1990 300zx TT , 04 Yamaha R6

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check all bushings

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car nut
Posts: 3246
Joined: Mon Oct 12, 2009 8:33 am
Car: GT500.
Location: The hottest neighborhood in America (Forbes)

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tmeyer29 wrote:check all bushings

robomatic12
Posts: 672
Joined: Sun Jul 12, 2009 12:05 pm
Car: 1990 300ZX TT

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it's not something simple as a bushing. I need people who have coilovers for their input, its something at the top of the coilover that's making a noise.

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Z-owned
Posts: 3487
Joined: Fri Aug 29, 2008 8:56 pm
Car: 93 N/A Z32
90 VW Corrado
01 mr2 spyder
Location: Auburn, WA.

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Alot of coilovers are noisy you go to a pillowball mount and have metal on metal as opposed to the rubber cushion with shocks. Them also being stiffer though you will hear things you didn't before from the car. Hard to give you much help without hearing it though.


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