Noise From Heat Shield On Catalytic Converter
#1
Driver School Candidate
Thread Starter
Join Date: Jan 2009
Location: NC
Posts: 16
Likes: 0
Received 0 Likes
on
0 Posts
Noise From Heat Shield On Catalytic Converter
When I drive my car makes these EXTREMELY embarrassing noises that come from the heat shield not being properly secured to the catalytic converter. In the past I was advised to have it welded. Which I have done, but it has since become loose again. Toyota did not advise removing it because they were saying that they could possibly damage the catalytic converter in the process. The only option the Lexus dealership offered was to replace the whole exhaust system for over $2000. Any other advice?
#4
Lead Lap
iTrader: (6)
I had this same problem. there are two for sure solutions that will cost you less than $200:
Option 1: get a big intake hose clamp. the ones that you can use for intake hose i'm not sure of the correct names and some heat resistant rubber tubing. place the clamp loosely around the heat shield then insert like two or three pieces of the rubber then tighten down. This is what I did to stop the rattling over 6 months ago and I havent heard it since
Option 2: get on Ebay or any popular car parts site (this includes Club Lexus) and purchase a Megan Racing DownPipe. you may need an O2 defouler for proper fitment under the car but this pipe doesnt have a heat-shield on it and you get a performance gain from it too. I plan on installing this next week. I have the pipe sitting in my room.
SCREW THE STEALERSHIP!!! lol GL!
Option 1: get a big intake hose clamp. the ones that you can use for intake hose i'm not sure of the correct names and some heat resistant rubber tubing. place the clamp loosely around the heat shield then insert like two or three pieces of the rubber then tighten down. This is what I did to stop the rattling over 6 months ago and I havent heard it since
Option 2: get on Ebay or any popular car parts site (this includes Club Lexus) and purchase a Megan Racing DownPipe. you may need an O2 defouler for proper fitment under the car but this pipe doesnt have a heat-shield on it and you get a performance gain from it too. I plan on installing this next week. I have the pipe sitting in my room.
SCREW THE STEALERSHIP!!! lol GL!
#5
Lexus Fanatic
iTrader: (182)
figs....aka mike makes a heatshield for you gs300 guys
check here....
https://www.clublexus.com/forums/per...eatshield.html
https://www.clublexus.com/forums/per...ld-for-gs.html
check here....
https://www.clublexus.com/forums/per...eatshield.html
https://www.clublexus.com/forums/per...ld-for-gs.html
Last edited by sakataj; 02-05-10 at 08:57 AM.
#6
Lead Lap
iTrader: (6)
figs....aka mike makes a heatshield for you gs300 guys
check here....
https://www.clublexus.com/forums/per...eatshield.html
https://www.clublexus.com/forums/per...ld-for-gs.html
check here....
https://www.clublexus.com/forums/per...eatshield.html
https://www.clublexus.com/forums/per...ld-for-gs.html
#8
Lexus Test Driver
When I drive my car makes these EXTREMELY embarrassing noises that come from the heat shield not being properly secured to the catalytic converter. In the past I was advised to have it welded. Which I have done, but it has since become loose again. Toyota did not advise removing it because they were saying that they could possibly damage the catalytic converter in the process. The only option the Lexus dealership offered was to replace the whole exhaust system for over $2000. Any other advice?
#9
Advanced
iTrader: (2)
When I drive my car makes these EXTREMELY embarrassing noises that come from the heat shield not being properly secured to the catalytic converter. In the past I was advised to have it welded. Which I have done, but it has since become loose again. Toyota did not advise removing it because they were saying that they could possibly damage the catalytic converter in the process. The only option the Lexus dealership offered was to replace the whole exhaust system for over $2000. Any other advice?
#11
Driver School Candidate
Join Date: May 2009
Location: CA
Posts: 45
Likes: 0
Received 0 Likes
on
0 Posts
Do you think this might also be happening in my '06 SC430? I'm getting this higher pitched rattling noise, sounds like sheet metal maybe.
It's only at highway speeds, seems to get worse or better with any wind buffeting/wind noise I hear from crosswinds, etc. I checked under the car and the plastic panels underneath are tight, those don't seem to be the problem.
It's getting worse fairly quickly, first noticed it yesterday on a freeway trip, by the time I got home it was constant. Thanks!
It's only at highway speeds, seems to get worse or better with any wind buffeting/wind noise I hear from crosswinds, etc. I checked under the car and the plastic panels underneath are tight, those don't seem to be the problem.
It's getting worse fairly quickly, first noticed it yesterday on a freeway trip, by the time I got home it was constant. Thanks!
#12
Driver School Candidate
Thread Starter
Join Date: Jan 2009
Location: NC
Posts: 16
Likes: 0
Received 0 Likes
on
0 Posts
Any advice on what tools to use if I were going to rip it off myself? Or would I be better off letting a muffler shop do this? I'm not mechanically educated, but I can follow directions.
#14
Lexus Test Driver
iTrader: (5)
tin cutters work well if you dont have a electric saw/dremel. the bolts around my heatshield were rusted in layers so i had to cut away at it. only part you really have to cut are the areas near the bolts if you have the same problem as i did. wear a face mask when youre down there, the shield is packed with some insulation that gets all up in your nose and eyes.
#15
Lexus Test Driver
iTrader: (5)
there is only one solution and its free. mine use to do this actually all 3 of my GS's used to do this same with the hood latch cable and the drivers door bottom molding.
i put up with it for a year then i put the car on jackstands and cut the heat sheild off 2 years ago i havent had any problems since. to get to the ones on the header is going to be a little touch but it can be done.
oh yea to cut around the ruste bolts i used metal shears from home depot and they worked perfect. the rest of the shield is over lapped top to bottom and just take a screwdriver to it and unflap the edges. you will see what i mean when you get under there. Good Luck!!
i put up with it for a year then i put the car on jackstands and cut the heat sheild off 2 years ago i havent had any problems since. to get to the ones on the header is going to be a little touch but it can be done.
oh yea to cut around the ruste bolts i used metal shears from home depot and they worked perfect. the rest of the shield is over lapped top to bottom and just take a screwdriver to it and unflap the edges. you will see what i mean when you get under there. Good Luck!!