rattling catalytic converter - YotaTech Forums


Go Back   >


95.5-2004 Tacomas & 96-2002 4Runners 4th gen pickups and 3rd gen 4Runners
Sponsored by:
Click Here

rattling catalytic converter

Reply
 
LinkBack Thread Tools Search this Thread
Old 03-19-2007, 09:00 AM   #1
Registered User
Thread Starter
 
Join Date: Feb 2007
Posts: 51
rattling catalytic converter

I just had my 97 4runner put through emissions and it passed but i am noticing a rattling noise as i rev the engine and it sounds like its coming from the cat converter. This happened on my 94 dodge ram so i put a new one in and the rattle was gone. Anyone else have this problem with their 4runners? I don't want to replace a working converter but the rattle is kinda trashy sounding.
kenai is offline   Reply With Quote
Old 03-19-2007, 09:02 AM   #2
Registered User
 
91TPU's Avatar
 
Join Date: Oct 2006
Location: NorthWest NJ
Posts: 1,589
before you say its the cat, make sure there are no hangers loose that could cause the whole exhaust to rattle
91TPU is offline   Reply With Quote
Old 03-19-2007, 09:05 AM   #3
Registered User
 
Jeenyus04's Avatar
 
Join Date: Oct 2006
Location: washington
Posts: 175
If your cat is rattling its done and the pieces can get in to your muffler an get stuck in there if you dont replace it soon.
Jeenyus04 is offline   Reply With Quote
Old 03-19-2007, 09:26 AM   #4
Contributing Member
 
kevin444's Avatar
 
Join Date: Jun 2004
Posts: 1,809
It could also be the heatshield that is attached to the cat. Try having someone replicate the sound and just get a stick and hold onto the heatshield to see if that neutralize the rattle. If noise goes away, just unbolt it off. But if the sound is still there, it might also be an exhuast leak perhaps at weld points and or flanges.
kevin444 is offline   Reply With Quote
Old 03-19-2007, 09:27 AM   #5
Registered User
 
91TPU's Avatar
 
Join Date: Oct 2006
Location: NorthWest NJ
Posts: 1,589
Quote:
Originally Posted by kevin444 View Post
It could also be the heatshield that is attached to the cat. Try having someone replicate the sound and just get a stick and hold onto the heatshield to see if that neutralize the rattle. If noise goes away, just unbolt it off. But if the sound is still there, it might also be an exhuast leak perhaps at weld points and or flanges.
heatshields and NJ dont mix...every vehicle i have ever gotten it is the first thing i tear off...and then i remember not to park on dry leaves
91TPU is offline   Reply With Quote
Old 03-19-2007, 09:36 AM   #6
Registered User
 
gixxerjesse's Avatar
 
Join Date: May 2006
Location: Rio Rancho NM
Posts: 90
if it sounds like it is coming from your cat its the cat weather it is the heat sheild or the honey comb, most likley the later. if you have an effieciant engine the cat wont really matter. and on the flip if you have a very inefficiant engine with a brand new cat it probablly wont pass emission the cat does help but isnt the only thing involved in the process

i had this same thing you are describing happen to me on my 94 sonoma, i just ignored it for 6 months and finally all the ☺☺☺☺ broke apart and is gone now probabbly not the best aproach but i dont care it works fine now i will replace my cat when the rest of my exhaust needs it.
gixxerjesse is offline   Reply With Quote
Old 03-19-2007, 09:45 AM   #7
Registered User
 
Join Date: Aug 2003
Location: Fort Worth, TX. USA.
Posts: 171
Quote:
Originally Posted by kenai View Post
I just had my 97 4runner put through emissions and it passed but i am noticing a rattling noise as i rev the engine and it sounds like its coming from the cat converter. This happened on my 94 dodge ram so i put a new one in and the rattle was gone. Anyone else have this problem with their 4runners? I don't want to replace a working converter but the rattle is kinda trashy sounding.

I have exactly the same ting on my 1996 4Runner.
I have been like that for at least a year and about 10K miles.
Besides trashy sound I have no other side effects.
progress4m is offline   Reply With Quote
Old 03-19-2007, 11:56 AM   #8
Contributing Member
 
rimpainter.com's Avatar
 
Join Date: Jan 2003
Posts: 10,916
I thought I had the same problem until I found a small rock in the lower heat shield of my cat. I had to cut the rock out. Don't ask me how it got in there if it wouldn't fit through the holes!

A good tactic to finding a rattle is to take a rubber mallet and lightly bang around under the vehicle until you find the culprit. Try this on your cat after the exhaust has cooled down.
rimpainter.com is offline   Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
DIY Paint Job - I CAN'T make it look worse, so no harm done. ashamsuddin General Vehicle Related Topics (Non Year Related) 13 06-18-2016 12:17 AM
90 pickup 3VZE rough idle, rattling... air noise problem zytra 86-95 Trucks & 4Runners 31 06-06-2016 09:50 AM
FS[MidAtl]: 1979-1983 Pickup Parts For Sale - Post Build Garage Clean Out kawazx636 Vehicles - Parting Out 31 02-23-2016 11:57 AM
Transmission rattle Flightguy 95.5-2004 Tacomas & 96-2002 4Runners 8 10-02-2015 05:34 PM
More LED light stummpper problems Scotttekoch General Electrical & Lighting Related Topics 5 09-28-2015 10:30 PM


Tags
cadillac, catalyct, catalystic, catalytic, converter, coverter, effects, fix, noise, rattle, rattles, rattling, side, taking, toyota

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 -8. The time now is 04:11 AM.


2010 InternetBrands, Inc.