Loud exhaust out of nowhere

[jrg24]

So today on my way to work I saw a check engine light come on. During my lunch break I went to auto zone to get the code checked and the guy told me it was pulling a bad TPS sensor. I went back to work and figured I'd pick one up around the corner from my house when I got off. The 4runner ran completely normal all day at this point. I may have noticed a slight rough idle but nothing major. Anyway, as I was about to leave work I turned the truck on and it sounded like I had flow masters or something installed. It was a loud, low rumbling sound. The noise just came out of no where. Anyone have any clue as to what it might be?

 

[SCRunner12]

Still have your cats?

 

[Slow_T4R]

Still have your cats?

x 1,000

Climb under and check that first.

 

[BigFishAllDay]

Still have your cats?

I know it's wrong, but this made me laugh.

 

[jrg24]

Still have your cats?

When I first read this I thought that if I lost the catalytic converter that I would have noticed it while driving...that is until I remembered how many POS crackheads there are in this world. They cut it clean off. I haven't checked yet, but the whole thing is probably on video. we have security cameras at work all over the parking lot.

 

[SCRunner12]

OP, that really sucks. Hopefully they are on tape and something can come of it.

 

[13T]

I would guess the studs on your o2 sensors rusted and it just popped out of your cat. If so I used wire and chimney flue cement for a temporary solution.

 

[jrg24]

I would guess the studs on your o2 sensors rusted and it just popped out of your cat. If so I used wire and chimney flue cement for a temporary solution.

No, it was cut. both O2 sensors are still there. There was a pile of shavings on the ground form where they cut it.