I also don’t understand, I thought you can’t weld onto rust. I know they make universal flex pipes, you can cut out the old section and replace just that section, but would you weld the replacement onto the rust of the exhaust that is old and rusty? Or they would just clamp it down instead? I think I could do that myself no problem.
I think the rest of the exhaust is leaking slightly at the flanges as well. Bolts rusty so badly, don’t think I could get them off with hand tools or an impact, doesn’t look like there’s much left of them, can’t even feel a hex. So I would have to replace the rest of the exhaust with it, don’t have a torch I’m afraid.
@Tester Thanks for the heads up on not using stainless steel. It won’t rust, so what part of it would make it difficult to remove, even with no rust? Also I thought most oxygen sensors come with some kind of anti-seize in their box, or already applied to the threads? That’s why I was asking, because I plan on re-using the old ones.
@TwinTurbo why did you eventually get rid of your 2003 camry, just wondering?
@George_San_Jose1 used a shop vac and blew air into the muffler, put my hands under the flex pipe section and could feel the breeze real good. On this car, it’s an accordion looking pipe under the braids it seems.
Found it in this video Toyota Camry, Replace Muffler, Resonator Pipe, Flex Pipe With Catalytic Convert, FnF576 - YouTube
I also jacked up my engine a bit for tensioner, wondering if that placed unnecessary strain on the flex pipe section, might have been wise for me to unbolt that section from the exhaust manifold.

