Exhaust Leak

[limeliam]

Hello, 2002 TJ. I have an exhaust leak that’s extremely loud and I figured out that it’s coming from here, there is no hole in the cats pipe but rather from this piece next to it (right where my hand is). Could someone help me identify it? Thanks

 

[Gilaguy23]

Whats rubbing on the driveshaft? All I see is 2 cats off the ex manifold.

 

[BlueC]

As mentioned, it looks like something is rubbing/riding on the driveshaft.

Where on the exhaust pipe are you point at? In that general area, there shouldn't be any holes. From that picture, your exhaust looks to be in decent condition. If there is a hole, just take it to an exhaust shop and let them weld it. Here, that's a $40 repair for a few simple welds.

 

[limeliam]

Actually yes it was the cat, I found a small crack, thanks for the help!

 

[BlueC]

Actually yes it was the cat, I found a small crack, thanks for the help!

Be careful with that one. Cats are a high ticket job that shady shops like to sell/push on unknowledgeable people. From what I can see in the picture, you can probably have it welded up. Show a pic if you can. Is your check engine light on?

 

[limeliam]

Be careful with that one. Cats are a high ticket job that shady shops like to sell/push on unknowledgeable people. From what I can see in the picture, you can probably have it welded up. Show a pic if you can. Is your check engine light on?

No engine fortunately but im just going to take it off and patch weld it

 

[BlueC]

No engine fortunately but im just going to take it off and patch weld it

If you can get to it, you can just weld it in place. No need to open a can of worms.

 

[Link]

An entire replacement exhaust including catalytic converters isn’t that expensive unless you have to buy a CARB compliant one. If it’s cracking then I’d be replacing it.

I am also curious about that rub mark on your driveshaft. I’d figure out what’s rubbing and fix it because it should not be doing that.