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10-08-2019
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#1 |
 Join Date: Nov 2014
Location: Brooklyn ny
Posts: 1,045
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Thumping noise from rear ( left side )
91 Z....U joints changed 1,000 miles ago...On the highway the other day coming back from corvette weekend in ocean city..
About a few miles from my home I heard a thump from under car like I ran over something....Don't recall anything on highway and quickly checked drivers side mirror to see.....Nothing...My best guess is I did not hit anything.... Car now has like a thumping sound coming from rear when I'm driving , mainly from left side......Only drove it a few blocks this morning to put into my garage.....Didn't jack the car up yet but checked maybe a loose caliper ? No there tight along with all lug nuts....Nothing hung up in wheel well either.... |
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10-08-2019
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#2 |
 
Join Date: Dec 2003
Location: Arcadia,OK
Posts: 3,376
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Re: Thumping noise from rear ( left side )
Do you still have stock inflation sensors on your wheels? Maybe one came loose, but it should cause some imbalance at hwy speed. If so, you will hear it when you jack up rear & hand rotate.
Otherwise, no suggestions apart from closer inspection.
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Jerry Downey JERRYS LT5 GASKETS & PARTS http://www.jerrysgaskets.com 1994 ZR-1, Black/Black, Lingenfelter Aerobody, 416cu in, 3.91 gears, coil-over susp, Brembo brakes, etc. 2016 Black-Red, 3LT-Z51 Auto 8-speed. |
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10-08-2019
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#3 |
 
Join Date: Aug 2012
Location: Ellicott City, MD
Posts: 1,638
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Re: Thumping noise from rear ( left side )
Same happened to me last year on BG trip. Lost a brake caliber bolt. See if they are all there (I think should be 3)
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Charlie __________ Dredgeguy WAZOO Member 1992 Bright Red/Black ZR1 #246 Dana 4:10 gears Polished LT5 by Haibeck Polished Fikse FM5's with Michelin Pilot Sport 2 Stainless Works headers and cats with Corsa |
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10-08-2019
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#4 |
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Join Date: Nov 2014
Location: Brooklyn ny
Posts: 1,045
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Re: Thumping noise from rear ( left side )
Should be able to jack up car Tommorow and give it a better look....Will post findings...
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10-08-2019
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#5 |
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Join Date: Jul 2018
Location: York, PA
Posts: 8
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Re: Thumping noise from rear ( left side )
I had a similar intermittent noise…found the upper bushing on the one rear shock worn away.
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10-14-2019
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#6 |
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Join Date: Nov 2014
Location: Brooklyn ny
Posts: 1,045
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Re: Thumping noise from rear ( left side )
Update....Wound up being the U joint on drivers side.....I pulled the drivers side rear wheel and didn't see anything out of the ordinary ( limited space to work in my garage)...Got it up on the lift next morning at my mechanics...He replaced the U- joint no charge since this repair was done recently.....
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