Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com
 
HRE Wheels
Go Back   Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com > Engine | Drivetrain | Powertrain Technical Discussions > Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons

Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

Reply
 
Thread Tools
Old 08-09-2009, 08:28 AM   #1
ZZcamaro


 
Drives: 2SS w/ ZZ427 Package!!
Join Date: Oct 2008
Location: Pittsburgh, PA
Posts: 2,706
Unhappy Mystery Sound....I need your help

I have a mystery sound, or rattle, or grinding sound, in my car that I would like to know what you folks think it could be.

When I start driving there is no problem....but once the car heats up, I get a rattle, or grind sound around the feet area of the driver. It only does it when the car is finally warmed up. It seems to be on the driver's side, and not in the driveline. I figure it has something to do with exhaust, because it did not start until after me did some exhaust work!!

But when I go underneath to check it out, all the clamps are good and tight. I also could not find anything close enough to the exhaust to be rattling! Only think I did not check was how tight the O2 sensors are...but they are tight enough I could not spin them with my fingers.

Again this seems to only be on the driver's side near my feet once the car heats up. Does the stainless move once it is heated? Any input would be very helpful....
ZZcamaro is offline   Reply With Quote
Old 08-09-2009, 08:46 AM   #2
SGOS252382


 
SGOS252382's Avatar
 
Drives: 2010 Camaro 2SS/RS
Join Date: Mar 2008
Location: S.W. Florida
Posts: 6,111
Could be the headers are rubbing against something. Especially if it happens when your making a turn or weight is being transferred from one side to the other.
__________________
SGOS252382 is offline   Reply With Quote
Old 08-09-2009, 09:26 AM   #3
ZZcamaro


 
Drives: 2SS w/ ZZ427 Package!!
Join Date: Oct 2008
Location: Pittsburgh, PA
Posts: 2,706
Headers seem to have room. I could not find any area where it is close to anything.

It originally only did it when the car was under "load"...;.now it does it more often
ZZcamaro is offline   Reply With Quote
Old 08-09-2009, 09:34 AM   #4
Croatcamaro2010
 
Croatcamaro2010's Avatar
 
Drives: '10 Camaro RS 1LT
Join Date: Jul 2009
Location: Saint Louis
Posts: 322
i would call cartalk ask click and clack
Croatcamaro2010 is offline   Reply With Quote
Old 08-09-2009, 10:33 AM   #5
BackinBlackSS/RS
Go Blue!!!!!
 
BackinBlackSS/RS's Avatar
 
Drives: 2012 Cruze LT
Join Date: Mar 2009
Location: Indiana
Posts: 23,369
Quote:
Originally Posted by ZZcamaro View Post

It originally only did it when the car was under "load"...;.now it does it more often
This would leave me to believe it is something that is slowly loosening up. The more it loosens the more your gonna hear it. Now, you just need to figure out what it is.
BackinBlackSS/RS is offline   Reply With Quote
Old 08-09-2009, 10:41 AM   #6
rayhawk

 
rayhawk's Avatar
 
Drives: Trailblazer SS
Join Date: Aug 2008
Location: Miami
Posts: 850
When you say the clamps are tight, did you put a socket on them to check? Remember that as it gets hot, the clearances get bigger. I always like to retighten exhaust flanges and connections after a bit of run time. Also, if you can tighten it while the system is warm (be careful) that should help.
__________________
Hooters, hooters, yum yum yum, hooters, hooters on a girl thats dumb.
-Al Bundy

07 2WD Trailblazer SS, LS1 E-fans, 4" FWI, pcmforless tune
72 VW Beetle, 2275cc, Dual 44 IDF's
rayhawk is offline   Reply With Quote
Old 08-09-2009, 04:31 PM   #7
Doc
Dances With Mustangs
 
Doc's Avatar
 
Drives: 2010 1SS/RS MT
Join Date: May 2009
Location: California
Posts: 3,597
Do you feel anything in the clutch pedal or shift knob when this is happening? Might be something in the clutch plate. Or maybe something is sitting loose inside the header pipe; like something is hung in the collector.
__________________

Blue Angel is here!!
1SS/RS LS3 M6 IBM
Doc is offline   Reply With Quote
Old 08-09-2009, 04:47 PM   #8
JDBeck23

 
Drives: 2010 Camaro, 2SS/RS
Join Date: May 2009
Location: King George, Va
Posts: 877
ZZ, I torqued my clamps to 65 ft/lbs per magnaflows directions. I also sheared one of the bolts in half in the process.... I would suggest climbing under and torquing them down to at least 55 ft/lbs.

I had two places where I ran into rattles in the exhaust setup, at the "gasketless flange" just past the crossover brace, and where the magnaflow pipe passed by the rear diff.

If your pipes arent perfectly centered down the middle of the tunnel at the "gasketless flange", the bracket will rub and rattle on a small screw that's sticking out of the frame that the heat shielding is attatched to underneath the car. Might be your noise.
__________________

2010 2SS/RS CGM
American Racing Headers, Magnaflow axle back, Roto-Fab CAI, Audio Integrations Sub box, Alpine Type R 10, Alpine MRP-500 amp, Pro Clips iPhone Mount
JDBeck23 is offline   Reply With Quote
Old 08-09-2009, 04:48 PM   #9
56chevywagon
 
Drives: 10 Camaro SS - 03 Silverado SS
Join Date: Oct 2008
Location: Phoenix
Posts: 75
Off topic of mechanical problems but does it only occur when your A/C is on? I have noticed in all of my GM cars and trucks now including the Camaro that the A/C fan makes a humming/grinding sound that matches RPM's when the A/C clutch engages.
__________________

2003 Silverado SS - Mods: Polished Radix S/C 3.10 pulley, Jerry's Transmissions Inc (Sprayed99) Built Tranny, Yank TT3000 Stall Converter, MSD Super Conductor 8.5 Wires, Airaid box w/ K&N Cone Filter, Flex-A-Lite 282 Elec. Fans, Flowmaster 50 Series Mufflers, Helwig Rear Anti Sway Bar, and a Shopman SS Bowtie.
2010 Camaro RS/SS- VIN 9852 - 2SS, RS Package, Inferno Orange w/ Cyber Gray Stripes, Inferno Orange Interior Accents, Body Color Engine Covers, Sunroof
56chevywagon is offline   Reply With Quote
Old 08-09-2009, 07:41 PM   #10
ZZcamaro


 
Drives: 2SS w/ ZZ427 Package!!
Join Date: Oct 2008
Location: Pittsburgh, PA
Posts: 2,706
I am going to take some time and try to re-tighten everything tomorrow, then run it until hot, and re tighten.

I idea that it is something slowly looseninf sounds right!! But what it is I do not know. I am going to have to find something. I checked the clearance every where in the system and there is no less than 1/2 inch in any place.

Thanks for the input...I will keep checking back for more ideas of what it could be.
ZZcamaro is offline   Reply With Quote
 
Reply

Thread Tools

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Exhaust sound bulldog Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons 13 07-07-2009 02:43 PM
Markups = NO Camaro. 350(V8) = Camaro Like Sound One Mean Chevy Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons 12 07-01-2009 11:03 PM
How is the Camaro Sound System? 2Muchmark Audio, Video, Bluetooth, Navigation, Radar, Electronics Forum 14 04-27-2009 12:23 PM
Surround Sound Help! T! E! X! A! S! Off-topic Discussions 3 01-24-2009 05:55 PM
Sound check MustangKillr 4th Generation Camaros 8 10-08-2008 09:54 AM


All times are GMT -5. The time now is 10:51 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.