Do I have clogged cats?

[SilverLJR]

I’ve got an exhaust leak on the flange connecting the manifold to the pre cats.

I was told by one of the fb groups that I probably have clogged cats causing the back pressure causing the leak.

What I’m wondering is how can I 100% know I need to replace my cats. I’m only getting an intermittent code for p0153 (o2 sensor bank2 sensor1).

any help is appreciated. Thanks

 

[tr21triton]

Have you tried tightening the bolts ?

 

[John Cooper]

^^^^ This first!!

 

[TheBoogieman]

Have you tried tightening the bolts ?

Too much work.

 

[KennethS]

I was told by one of the fb groups that I probably have clogged cats causing the back pressure causing the leak.

Serious question: Has anyone ever heard of this happening?

Seems extremely unlikely to me, but I didn't want to bash the collective intelligence of fb before asking.

 

[macleanflood]

Use an IR temperature gun and measure the exhaust temp before the cat, on the cat and after the cat.

-Mac

 

[Jamison C]

but I didn't want to bash the collective intelligence of fb before asking.

What, all 50 collective IQ?

 

[Moglocker]

I’ve got an exhaust leak on the flange connecting the manifold to the pre cats.

I was told by one of the fb groups that I probably have clogged cats causing the back pressure causing the leak.

What I’m wondering is how can I 100% know I need to replace my cats. I’m only getting an intermittent code for p0153 (o2 sensor bank2 sensor1).

any help is appreciated. Thanks
View attachment 615359

Take the o2 out and get a camera with a side view.

 

[tr21triton]

Too much work.

I think your right. It's a lot easier to tighten them when installing the new cats. Better yet to just get the guy at the muffler shop charging him $1000 or more to replace to tighten them !

 

[GOLENJEEPTJ]

Have you tried tightening the bolts ?

1st thing to check!

 

[tr21triton]

1st thing to check!

The guy at the shop said he would check them for $40 extra while he's replacing the cats.