Suddenly car's exhaust is loud

Hi and thanks for using 2CarPros.

Honestly, it matters what the cause is. If something has come loose, most likely it can, but most times rust is the cause. I attached a picture that shows the system from the engine to the tail pipe (picture 1). Inspect the system on your vehicle and let me know where the leak is located. If you want to replace the system, here are the directions.

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PROCEDURES

See picture 1

REMOVAL

Main Muffler

CAUTION: Before removing or inspecting the exhaust system, ensure that the exhaust system is cool enough.

1. Disconnect the main muffler from the center exhaust pipe.

See picture 2

2. Remove the rubber hangers and take out the main muffler.

Center Exhaust Pipe

See picture 3
1. Disconnect the center exhaust pipe from the main muffler.
2. After disconnecting from the front exhaust pipe, remove the center exhaust pipe.

Front Exhaust Pipe (including rear catalytic converter.)

See picture 4

1. Remove the front exhaust pipe from the center exhaust pipe.

See picture 5

2. Remove the front exhaust pipe from the exhaust manifold (Including front catalytic converter)

See picture 6

3. Remove the front exhaust pipe from the rubber hanger.

INSPECTION
1. Check the mufflers and pipes for corrosion and damage.
2. Check the rubber hanger and hangers for deterioration and cracks.

INSTALLATION
1. Temporarily install the front exhaust pipe (Rear catalytic converter assembly), the center exhaust pipe, and the main muffler, in order.
2. Install the rubber hangers so that they are identical (left and right) in length.
3. Tighten the parts securely, and then confirm that there is no interference with any body components.

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If you locate the leak, let me know where it is. Also, if you have other questions, let me know. I hope this helps.
Take care,
Joe

Please do we are interested to see what it is.