How bad is my CV Axle & Catalytic Converter?

2012 Nissan Altima

CV Axle:

- Clunking** **when shifting from reverse to drive or drive into reverse
- a soft click or soft clunk noise when pressing brakes just before car comes to a complete stop AND when I tap the gas pedal
- there’s NO clicking or popping when turning and no other symptoms than the two described above

Catalytic Converter:

- Car jerks on acceleration or deceleration sometimes
- Triggers P2432 code
- Yesterday after driving for 9hrs I started smelling fumes from AC. It stopped when I recirculated the air. I’ll change my Cabin air filter today to see if that helps.
- 3 weeks ago the mechanic said my catalytic converter looked brand new, but when I brought my car in to get the jerking checked last week , they said there’s a leak coming from the rear catalytic converter and that the whole part needs to be replaced for $800. I didn’t think to ask about them welding it.

Sidenote: I drove through a puddle of water 4 nights ago that caused my engine air filter to get a little wet and made my engine stall, as well as a short circuit in my Trans range sensor (p0705). I got towed back home and let my car sit for two days in 88-92 degree heat while my engine air filter dried by my house fan. Trans sensor is fine again. Engine Air filter has been reinstalled.

Update***

Just scheduled to get my CV axle replaced for $530. The soonest is Wednesday. I use my car for Uber fulltime and I’m in a weird spot where I must keep working to make the money for bills/repairs. I was going to leave my Catalytic Converter alone because $800 is needed elsewhere.