Question about 1987 Nissan 300ZX

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Theres a "clunk in the trunk!!!"1988 nissan 300zx n/a

Wenever i shift my 1988 nissan 300zx n/a there is a huge "clunking" noise and it jerks really hard. Im just tryin to find out wat the problem is so i can fix it.

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  • scatman10209 May 15, 2009

    could it be the bushings?

  • Bill Hackett Jul 04, 2014

    There are two possibilities.one can be misleading because sound can travevel up and make it seem like it is coming from somewhere else than where it is really coming from. The most common problem for a clunk or most of my customers describe it as a loud thump coming from that area, is a bad front differentl mount which will lift the front of the differential and hit the body of the car when you accelerate. In the rear, there is what is called a mustash bar which as bushings pressed into it and the differental is bolted to the center of that bar. when the bushings fail (and it is rare ro find them deteriorated to that point, but possible) the mustash bar will hit the lower part of the body and wil cause a thumping sound as well. Nissan has been using this design since the late 1960's when they started using independant suspensions. My suggestion would be to look at the front differential mount.. Althought it is possible as the above person described, the only time I have ever replaced a mustash bar is when the bushings arecompressed and , hard and showing cracks. Your car is way too new for worn out mustash . you could possibly hear some noise coming from that area if the nuts holding the mustash bar were severly backed orr.

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Rear end mount and rear mustache bushings I had the same problem ; that fixed it

Posted on Jul 14, 2009

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My 1985 300zx is doing the same basic thing. I believe that it may be my bushings, but im not exactly sure. Mine is noticable, yet not drastic as of yet. Let me know what you find out. -josh

Posted on Jul 10, 2009

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Sounds like you could have a mounting broken or weak mounting

Posted on May 15, 2009

  • John Gwilliam May 15, 2009

    yes it could be the bushings

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