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Hey Everyone, new to the community & need some advice.
I have a very annoying rattling noise that has recently developed; after some poking around it does not appear to be a heat shield, an exhaust hanger, or anything else contacting the outside of the muffler.
If i push upwards hard on the muffler i can get the noise to quiet down- i think my hand putting pressure on it acts as a dampener.
Has anyone else encountered this before? Any ideas on how to continue troubleshooting? TIA
have you gone underneath the car? I wonder if chambers in the muffler somehow broke? Typically there's a break at the flanges somewhere (or sleeve like our cars)
have you gone underneath the car? I wonder if chambers in the muffler somehow broke?
Yes, i did go underneath- i was thinking it might be a loose heat shield or something... im worried you may be onto something with a baffle being broken.
Anyone else seen this happen before?
Anyone have a stock muffler collecting dust they would be willing to sell me?
I also have a 958 '12 CTT - still using the stock muffler and higher mileage and don't have this issue. I'd get a new muffler but having a hard time justifying the 1600$ tag
I also have a 958 '12 CTT - still using the stock muffler and higher mileage and don't have this issue. I'd get a new muffler but having a hard time justifying the 1600$ tag
Yea, i'd rather not buy a brand new muffler... i put some feelers out for someone that might have a used one laying around from an exhaust upgrade.
If anyone reading this has a muffler for sale please let me know
Sold my old muffler to someone that had the same exact issue, I can sell you the one off my new CTT dirt cheap. Located in Austin TX, message me and can figure out shipping.
So I had a very similar issue on my CTT. Cold startup and 60 sec or so of tin can rattle sounds. Would settle down. CPO tried replacing the sport exhaust flaps but didn’t solve it. They went ahead and replaced the entire muffler assembly. Problem solved for now. Bugged the heck out of me. Think a baffle weld came loose inside the muffler. Wonder if you could cut it open on top and reweld it after to fix the loose part. Have to be good weld cause wouldn’t want exhaust leak into cabin. Good luck and let us know what if you find anything.
I decided that I would give the home repair a shot and see what I was able to accomplish- lots of pics: Removed the Cat back section of the exhaust- saw horses or a good workbench are a must...lots of time spent hunched over. Used a sharpie to plot the cuts Began cutting some select areas Began cutting some select areas used some scrap angle steel to make an alignment bracket to assist with re-assembly later. You will really thank yourself for this step should anyone else attempt this. whallah This is the a**H*** CO** S***** plate that broke loose and was causing all that racket. Look close and you can see where the plate was vibrating side to side approximately 1/4" either direction started welding the baffle plate back in place. Going a bit overkill because I don't want to repeat this repair ever again... Weld the hell out of it went ahead and added some weld to the other plates while I was in there... More weld on the other plate Welded the center plate some more more weld clear pic of the broken weld movement more weld clear pic of the broken welds she not moving again dog is jealous Finished product all back together Finished product all back together Finished product all back together
Happy to say this is back to normal sound and it only cost me a few bucks in stainless welding wire.
I did spring for the expensive stainless wire- my buddies Mig welder was not set up to run shielding gas, and I wanted to maintain a rust free exhaust system.
Here is a link to what i used:
Final takeaway- knowing what I do now I wouldn't have cut the whole top of the muffler off, but just re-welded from outside along the baffles... hope this helps someone out in the future. feel free to ask questions.
And before anyone tells me my welding looks terrible... I know, but it's solid structurally and I don't care as you can't see the top of my muffler when it's in the car.
01-28-2019, 01:51 PM
958 CTT- 2012 Exhaust Muffler Rattling Noise -With Video-
