For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Inspect the exhaust pipe for kinking. Is the exhaust pipe kinked? | -- | Go to Step 2 | Go to Step 3
2 | Repair or replace the exhaust pipe. Is the exhaust system restricted? | -- | Go to Step 3 | System OK
3 | Remove the muffler and inspect it for restrictions. Is there restriction in the muffler? | -- | Go to Step 4 | Go to Step 5
4 | Replace the muffler. Is the exhaust system restricted? | -- | Go to Step 5 | System OK
5 | Inspect the end of the tailpipe for the following conditions:

• | Obstruction

• | Crimping

Is the tailpipe obstructed or crimped?

--

Go to Step 6

Go to Step 7

6 | Remove the obstruction or straighten the crimped tailpipe outlet. If the crimped tailpipe cannot be repaired, replace the muffler/tailpipe. Is the exhaust system restricted? | -- | Go to Step 7 | System OK
7 | Inspect the catalytic converter. Is the catalytic converter plugged? | -- | Go to Step 8 | --
8 | Replace the catalytic converter. Refer to Engine Controls to diagnose the cause of restriction. Is the exhaust system restricted? | -- | -- | System OK