General Maintenance & Repairs Leaks | Squeaks | Clunks | Rattles | Grinds
Sponsored by:
Sponsored by: CARiD

Mysterious rattle

Thread Tools
 
Search this Thread
 
Old Dec 28, 2007 | 01:09 AM
  #1  
buddha845's Avatar
Thread Starter
TECH Apprentice
15 Year Member
iTrader: (3)
 
Joined: Dec 2005
Posts: 324
Likes: 1
From: Tampa, FL
Default Mysterious rattle

Tried a search for this one but no dice.

Ive got a very strange rattling noise, it comes and goes at low speed/rpm its only there for maybe 1-3 seconds. it'll show up when i accelerate from a stop in daily driving, and after low speed turns but i would assume its the accelerating thats causing it. Its not every time tho, id say about 50% of the time.

Its a pretty rapid rattle, sounds more like metal on metal chatter. I noticed my sisters '02 trailblazer makes the same exact noise so i thought it would be some crappy GM part that a few people have had experience with. Any ideas?
Reply
Old Dec 28, 2007 | 02:10 AM
  #2  
Boodyrider's Avatar
12 Second Club
iTrader: (2)
 
Joined: Jun 2006
Posts: 580
Likes: 1
From: Baltimore, Maryland
Default

Put it on a lift and run it. look for exhaust parts touching body parts first.
Reply
Old Dec 28, 2007 | 08:02 AM
  #3  
PAGregSS's Avatar
TECH Fanatic
20 Year Member
iTrader: (10)
 
Joined: Aug 2002
Posts: 1,109
Likes: 0
From: Danville,PA
Default

Could be a catalytic convertor breaking up.
Reply
Old Dec 28, 2007 | 12:58 PM
  #4  
kraut187's Avatar
On The Tree
iTrader: (2)
 
Joined: Jul 2004
Posts: 144
Likes: 0
From: Sin City
Default

I've had this exact same problem for well over a year now. Luckily, it doesn't seem to have any adverse affect. I'm pretty sure it's not the exhaust and I have no cats. It persisted through a clutch swap as well, so I'm pretty sure it's not clutch chatter. I'm beginning to wonder if it might be a busted motor mount or something like that.
Reply
Old Jan 2, 2008 | 09:33 AM
  #5  
kraut187's Avatar
On The Tree
iTrader: (2)
 
Joined: Jul 2004
Posts: 144
Likes: 0
From: Sin City
Default

TTT I'd like to know if anyone has any input on this. Thanks
Reply
Old Jan 5, 2008 | 01:09 PM
  #6  
buddha845's Avatar
Thread Starter
TECH Apprentice
15 Year Member
iTrader: (3)
 
Joined: Dec 2005
Posts: 324
Likes: 1
From: Tampa, FL
Default

Originally Posted by kraut187
TTT I'd like to know if anyone has any input on this. Thanks
so i figured out that with the cutout closed the noise is much, much quiter. its barely noticeable unless you hear it echo off of a car next to you. made me lean towards cats too but you dont have em so im still stumped as to what it is lol, i just know its very very quiet with the cutout closed as opposed to the horrendous rattle with the cutout open
Reply
Old Jan 5, 2008 | 02:51 PM
  #7  
PAGregSS's Avatar
TECH Fanatic
20 Year Member
iTrader: (10)
 
Joined: Aug 2002
Posts: 1,109
Likes: 0
From: Danville,PA
Default

Do you have an electric cutout? If so, the next time you open the cutout all the way and you hear the noise, try closing it just a hair. My McCord electric cutout would rattle a bit when it was all the way open.
Reply
Old Jan 7, 2008 | 01:58 AM
  #8  
buddha845's Avatar
Thread Starter
TECH Apprentice
15 Year Member
iTrader: (3)
 
Joined: Dec 2005
Posts: 324
Likes: 1
From: Tampa, FL
Default

Originally Posted by PAGregSS
Do you have an electric cutout? If so, the next time you open the cutout all the way and you hear the noise, try closing it just a hair. My McCord electric cutout would rattle a bit when it was all the way open.
nah, its manual. still havent found the source of the noise tho
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-5

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-6

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
Old Jan 7, 2008 | 09:56 AM
  #9  
JD_AMG's Avatar
TECH Senior Member
 
Joined: Jan 2004
Posts: 5,798
Likes: 16
From: St.Charles MO
Default

Check the 02 sensors and make sure they are tight.
Reply




All times are GMT -5. The time now is 12:48 PM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-04 18:13:20


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-5
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-6
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-7
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-8
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-9
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE