The knocking noise in or around the catalytic converter comes because something is broken. It could be a pipe or a strap or something else. Fix it before you leave your exhaust pipe on the road.
knocking noise
A single knocking noise when braking or turning can be caused by a faulty axle. The cost of replacement is usually around 1,000 dollars.
i would get the transmission checked it sounds like your torque converter
NO. A knocking noise in the engine is a problem in the engine.
I get knocking & ping noise coming from the fuel injectors
A bad harmonic balancer can cause a knocking noise. The harmonic balancer doesn't actually produce the noise, but it can cause the noise in the engine.
if it is making a loud knocking noise it is about to go out If when you put it in to gear, it jumps in to it and the car starts to move instantly then the converter may be shot.
When your engine has a knocking noise, it could mean that a rod has been thrown. It could also mean you are low on oil.
many many things, Loose lug nuts which lets wheel make knocking noise. Engine will make a knocking noise if it is really low on oil. Some timing belts make a knocking, slapping noise just before they break.These are just a few examples . Have someone ride in car with you as you duplcate the noise and see if they can determine which part of the vehicle it is coming from.
Someone trying to get in.
It is broken.
The knocking noise could be one of several things. The wheel bearing, a worn steering or suspension part, or road debris could be causing the noise.