| EXCESSIVE EXHAUST NOISE (UNDER HOOD) |
1. Catalytic converter cracked or broken. |
1. Replace Catalytic converter. |
| 2. Catalytic converter to cylinder head leak. |
2. Tighten Catalytic converter and/or replace gasket. |
| 3. EGR Valve to manifold gasket leakage. |
3. Tighten fasteners or replace gasket. |
| 4. EGR Valve to EGR tube gasket leakage. |
4. Tighten fasteners or replace gasket. |
| 5. EGR tube to manifold tube leakage. |
5. Tighten tube nut. |
| 6. Exhaust flex-joint to manifold leak. |
6. Tighten joint fasteners and/or replace gasket. |
| 7. Exhaust flex-joint. |
7. Replace catalytic converter assembly. |
| 8. Pipe and shell noise from front exhaust pipe. |
8. Characteristic of single wall pipe. |
| EXCESSIVE EXHAUST NOISE |
1. Leak at exhaust pipe joints. |
1. Tighten clamps at leaking joints. |
| 2. Burned or rusted out muffler assembly or exhaust pipe. |
2. Replace muffler resonator tailpipe assembly or exhaust pipe with catalytic converter assembly. |
| 3. Burned or rusted out resonator. |
3. Replace muffler resonator tailpipe assembly. |
| 4. Restriction in exhaust system. |
4. Perform Exhaust System Restriction Check. Replace component as necessary. |
| 5. Converter material in muffler. |
5. Replace muffler and converter assemblies. Check fuel injection and ignition systems for proper operation. |