Home page
  Active Threads   Forum Search   Top Posters List   Private Messenger   Vette Registry Email System   Corvette Quiz
  Members Vettes & Pictures   Member Stories   Member Stats   Real Time Member Map   Member Search   Lifetime Member List   Member Calendar Entry Form   Who's Online
  Vette Registry Data   Corvette Statistics   Corvette Tips & Tricks   Corvette How-Tos   Corvette Club Directory   Corvette Events Calendar   Corvette Mechanic Directory   Corvette VIN Decoder   Save the Wave   Corvette Emblem History   C3 Corvette Birthday Calculator   C3 Corvette Build Dates & Trim Tag Codes   1953-1982 Corvette Parts & Illustration Catalog
  Corvette Parts Auctions on eBay   Corvette Books   Vette Registry In-Stock Apparel & Accessories   Vette Registry Member Name Badges   Vette Registry Custom Apparel & Accessories @ Zazzle   Vette Registry Window Stickers   Vette Registry Member Calendars   Shop Amazon.com
  Our History   Advertise with Us   Sponsor List   Link to Us   Compare Levels   Member Agreement   Terms of Service   Privacy Policy   Contact Us
☰

underbody rattle

Forum: C3 Engines, Driveline and Handling

8 Messages
Page 1 of 1
Share:
Sponsored Content
Don't Miss Out!
Join us for our 2026 Vette Registry Member Gathering! Click for full details.

Already a Member?

Welcome back! Access your account.

Sign In

Not yet a Member?

Join our community! Registration is free.

Join Free

underbody rattle

Posted: 2/15/08 6:14pmMessage 1 of 8
T
Tomsc380
Former Member
Send PM
WATERLOO, IL - USA
Joined: 3/4/2007
Posts: 1
Vette(s): 1980 Dark Blue L48 4 Speed manual 26,000 miles

ShockedConfusedI have a noise only when first accelerating from a dead stop. Sounds like a loose exhaust heat shield, kind of a tinny rattle. But I have been under it and no shields are loose and I replaced the rear y-pipe and the mufflers because I had a broken muffer baffle. The noise is still there. Thought maybe I should pull the spare tire and holder to see if I still hear it.  Hope someone has heard this one before. Thanks

Tomsc3802008-04-19 12:29:56
Be the first to like this post
Sign In to Like this post
SPONSOR AD:: (Our Sponsors help support Vette Registry)

underbody rattle

Posted: 2/15/08 6:37pmMessage 2 of 8
m
mkapp7879
Former Member
Send PM
Joined: 10/21/2003
Posts: 1220
Clearence between the rear Y pipe and the differential is pretty close. My white 79 rattles a little bit there.
 
edit: come to think of it. I have a service work order from when my black 79 was brand new. Same rattle as the white one.
 
If your clearence is as close as mine are, jamb a wood shim between the diff and Y and take it for a spin. Won't rattle if it can't move.
mkapp78792008-02-15 20:19:22
Be the first to like this post
Sign In to Like this post

underbody rattle

Posted: 2/15/08 7:51pmMessage 3 of 8
Profile Pic
Adams' Apple
Lifetime Member
Moderator
Send PM
Duncanville, TX - USA
Joined: 11/8/2003
Posts: 22720
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
Could be a u-joint on it's way out, or the front diff cushion is bad, and the u-joint is hitting somewhere.
Could also be the parking brake...something may be loose inside the rear rotor, and making a tinny noise.

Joel Adams
C3VR Lifetime Member #56    
My Link


(click for Texas-sized view!)             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

Be the first to like this post
Sign In to Like this post

underbody rattle

Posted: 2/15/08 8:07pmMessage 4 of 8
Profile Pic
lukesvette
Lifetime Member
Send PM
HOWELL, NJ - USA
Joined: 5/18/2004
Posts: 6812
Vette(s): 1979, Targa Blue (72 Color), Pace Car rear spoiler, L88 hood, Dark blue factory interior, 525HP 406, HD 700R4, 370 gears,Steeroids, composite rear spring, TT IIs wrapped in T/A Radials.
Heat shield on the cat conv?

LukesVette Homepage
Veteran of Operation Iraqi Freedom
101st Airborne(AirAssault!)
God Bless America
Support Our Troops


     

Be the first to like this post
Sign In to Like this post

underbody rattle

Posted: 2/16/08 5:47pmMessage 5 of 8
Profile Pic
dwright
Standard Member
Send PM
Victor, NY - USA
Joined: 7/12/2004
Posts: 6842
Vette(s): 2004 Commemorative Edition Coupe, Auto w/HUD. 13K miles in 2015. Sold 1982 Red Coupe
Can you put it up on 4 jack stands and run it in gear while you look (but don't get) underneath. Sometimes when you are in the car the source of the noise can fool you.
 
Save the Wave!
Support the National Corvette Museum   
Be the first to like this post
Sign In to Like this post

underbody rattle

Posted: 2/17/08 8:39amMessage 6 of 8
R
Ron 78
Lifetime Member
Moderator
Send PM
BINGHAMTON, NY - USA
Joined: 7/19/2003
Posts: 3825
Vette(s): ......
Crank the radio up Rolling%20On%20The%20Floor%20Laughing

C3VR Lifetime Member #93

Be the first to like this post
Sign In to Like this post

underbody rattle

Posted: 2/17/08 8:27pmMessage 7 of 8
Profile Pic
tuxblacray
Lifetime Member
Send PM
Greensburg, IN - USA
Joined: 9/24/2003
Posts: 5387
Vette(s): Previous: 1984 Coupe, 1988 Maroon Coupe, 1989 Coupe, 2001 Roadster Present: 1967 Stingray Roadster, 1976 Stingray Coupe, 1989 Roadster..
[QUOTE=LukesVette] Heat shield on the cat conv?[/QUOTE]

Paul gets my vote... that's where I found mine.

Then when I installed the new headers 1 pipe on the drivers side would hit the crossmember and rattle at about 750 RPM. Always something......

Tuxblacray: She's Back In Black! Check out my pics @ My Link


(Click on image to see a bigger version)

Be the first to like this post
Sign In to Like this post

underbody rattle

Posted: 2/18/08 4:36pmMessage 8 of 8
j
jayare
Former Member
Send PM
Joined: 1/4/2007
Posts: 475
My guess is it's a beer can on top of the fuel tankGeek
Be the first to like this post
Sign In to Like this post
Share:

in Forum: C3 Engines, Driveline and Handling


Sponsored Content