Very annoying rattle underneath car - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 05-09-2004, 02:40 AM   #11
Senior Member
True Car Nut
Thread Starter
 
Join Date: Feb 2004
Location: Pennsylvania
Posts: 5,177
Thanks: 0
Thanked 0 Times in 0 Posts
Twister97 is on a distinguished road
Default

So the best bet is to raise the car up and see if I can find any loose bolts and such. It only happens when heat gets to it, or after its been on for 10 minutes.
Twister97 is offline   Reply With Quote
Old 05-09-2004, 02:50 AM   #12
Senior Member
Certified Car Nut
 
Join Date: Jul 2003
Location: Robbinsdale, MN
Posts: 15,408
Thanks: 0
Thanked 0 Times in 0 Posts
MOS95B is on a distinguished road
Default

Yeah, your best bet would be to get under the car, follow the exhaust, and check for any excessive movements.

Ya gotta remember, heat weakens metal, so something that seems nice and tight when cool may be a touch looser when hot (Yeah, I know, metal expands when hot, but it also gets softer).

I would not recommend getting under the car while it is running. Not even with jack stands. If you feel you trust the stands, and that you need too, do not do this alone. Have someone there, just in case something goes wrong.
MOS95B is offline   Reply With Quote
Old 05-09-2004, 02:56 AM   #13
Senior Member
True Car Nut
Thread Starter
 
Join Date: Feb 2004
Location: Pennsylvania
Posts: 5,177
Thanks: 0
Thanked 0 Times in 0 Posts
Twister97 is on a distinguished road
Default

Yea, I got ramps and a few jacks I put under my car, but since I got the new tires, it is a really tight fit and I dont like to do it. I will usually go up to the craft shop and drive it on a ramp then raise the whole car 7 feet in the air. Going to do that pretty soon anyways to change the oil. The noise is just annoying neusance
Twister97 is offline   Reply With Quote
Old 05-10-2004, 12:44 PM   #14
Junior Member
 
Join Date: Apr 2004
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
steve haight is on a distinguished road
Default

Sounds to me like the new exhaust has internal sheet metal parts that "loosen up and vibrate" when they heat up. A friend of mine had this happen to a Chevy, and the shop that put the exhaust on finall replace the muffler with a better quality one, problem was solved.
steve haight is offline   Reply With Quote
Old 05-10-2004, 12:49 PM   #15
Senior Member
True Car Nut
Thread Starter
 
Join Date: Feb 2004
Location: Pennsylvania
Posts: 5,177
Thanks: 0
Thanked 0 Times in 0 Posts
Twister97 is on a distinguished road
Default

Muffler is from jegs, but I think it is around the cat that is giving me problems.
Twister97 is offline   Reply With Quote
Old 05-10-2004, 01:45 PM   #16
Senior Member
Posts like a Camaro
 
Join Date: Dec 2002
Location: Northeast MS
Posts: 1,079
Thanks: 0
Thanked 1 Time in 1 Post
94SSEgold is on a distinguished road
Default

my car did that and it was the exhaust shield above the muffler came apart from the the body and was just laying on the muffler causing this gawd aweful racket that i couldnt find anywhere until i got under there and started shaking things about and found it and the one for the cat was loose and hanging down also!!! Just something else you might want to check!!!
94SSEgold is offline   Reply With Quote
Old 05-10-2004, 01:54 PM   #17
Senior Member
True Car Nut
Thread Starter
 
Join Date: Feb 2004
Location: Pennsylvania
Posts: 5,177
Thanks: 0
Thanked 0 Times in 0 Posts
Twister97 is on a distinguished road
Default

Quote:
Originally Posted by 94SSEgold
my car did that and it was the exhaust shield above the muffler came apart from the the body and was just laying on the muffler causing this gawd aweful racket that i couldnt find anywhere until i got under there and started shaking things about and found it and the one for the cat was loose and hanging down also!!! Just something else you might want to check!!!
Thanks, I forgot about the heat shields.
Twister97 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
rattle buzz rattle smellbird General GM Chat 1 10-28-2007 11:54 PM
Catalytic rattle rattle rrounds 2000-2005 4 01-27-2007 01:57 AM
How do you get the ********* bolts off the TB underneath???? Hans 1992-1999 13 05-17-2005 01:04 AM
Rattle Rattle Trusty Bonneville 1992-1999 7 05-18-2004 01:55 PM
Rattle, Rattle, Thunder Clap - Boom Boom Boom ---HELP--- CorradoSLC 1992-1999 12 08-28-2003 01:16 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 03:33 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.