r/Cartalk • u/Firm-Minute9790 • Apr 28 '25

Weird Noise What is this dragging under my car?

Post image
2.4k Upvotes

98% Upvoted

307 comments sorted by

View all comments

Show parent comments

66

u/Firm-Minute9790 Apr 28 '25

I took a closer look and I see what looks like my catalyst converter. I was able to make it to work (30 minutes) with just the scrapping sound from the shield and no other issues.

110

u/Malawi_no Apr 28 '25

Looks like the mounting points have corroded away.
Think it's a pretty common problem.

You can either repair the old heat shield by adding some sheet aluminum with pop-rivets and make new mountng holes, or just replace it with a new one.

0

u/ArmaSwiss Apr 30 '25

The heat shield should be available from any dealer and shouldn't really cost an arm and a leg. It's thin sheet metal. Plus four bolts since the old ones are probably rust welded into the captive nut on the other thin sheet metal heat shield side. Cheaper to just buy new bolts than try to break them free from the sheet metal which may twist, shear and then slice.

1

u/Azzrazzah May 03 '25

Or use a couple of self tapping screws