6th Gen ('00-'05): Something has fallen off my car!

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01-11-2014, 07:10 PM

Sean_G

Thread Starter

Join Date: Aug 2013

Location: Oregon

Posts: 23

Part of my Resonator has fallen off!

2004 Monte Carlo SS 3.8l

So I was putting on my pretty new exhaust tips I just got today and I needed to use a bit of force to work them on the exhaust. (Flowmaster 2.5" inlet 4" outlet) Then Something fell off my car from the underside.

Knowing that this probably isn't a good thing I investigate to find this laying under the car.

(Edit: I found the picture I was looking for and now know it is a resonator but still not sure about the droning sound or how to go about fixing this.)

Quote:

I am assuming it is a part of the exhaust system but I was having trouble finding a picture of the exhaust that sows this part. As you can see this thing is quite rusty and has massive holes where I am assuming bolts used to go.So could someone help me out. What is this and how should I go about solving my dilemma?

Also my dad has been complaining about how the car drones quite loudly when I am idle and at low RPMs could this have been the culprit?

Now that I have found what it is anyone know of a good replacement I could order? I am guessing these affect the sound the car makes some what but any advice is welcome.

Thanks!

Last edited by Sean_G; 01-11-2014 at 07:38 PM. Reason: New information

01-11-2014, 07:57 PM

JuniorCar

Monte Of The Month -- January 2013

Join Date: Aug 2008

Location: London, Ontario

Posts: 5,611

That is just a heat shield normally mounted to the body. It is not really important at all, so don't stress. Heat shields are more of a PITA than anything else. They rattle. Although I'd want to make sure the heat shield around the gas tank is intact. That doesn't look like it.

01-11-2014, 08:02 PM

The_Maniac

Monte Of The Month -- December 2011
Monte Of The Month -- September 2014

iTrader: (2)

Join Date: Apr 2010

Location: Mentor, Ohio

Posts: 12,156

That is actually the heat shield to the resonator (which I believe is spot welded to the res). The res probably has a hole along the seam where it's crimped together.

I went through 2 aftermarket replacement resonators in less then 10,000 miles. My opinion, delete it. Replace it with a straight piece of pipe. I had a shop replace mine with a piece of straight pipe and never looked back.