Internal Muffler Rattles/Loss of Power. Buick Roadmaster 1996

For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Check to see if the turning tubes and/or the baffles in the muffler are dislodged. Are the turning tubes and/or the baffles in the muffler dislodged? | -- | Go to Step 2 | Go to Step 3
2 | Replace the muffler. Is there a loss of engine power and/or internal rattles in the muffler or catalytic converters? | -- | Go to Step 3 | System OK
3 | Check the catalytic converter and/or the exhaust pipe for cracked or melted substrate. Is there cracked or melted substrate in the catalytic converter or the exhaust pipe? | -- | Go to Step 4 | --
4 | Replace the catalytic converter or the exhaust pipe. Is there a loss of engine power and/or internal rattles in the muffler or catalytic converters? | -- | -- | System OK