Mopar E0015181 Front Catalytic Converter With Pipes

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The catalytic converter requires little maintenance, but should be inspected whenever the vehicle is raised on a lift or if the exhaust system is checked or serviced. During inspection, all connections in the exhaust pipe assembly should be checked for looseness and damage, as well as the clamps for damage, cracks, and missing fasteners. The rubber hangers should also be checked for cracks. The converter itself should be checked for damage and dents that could affect performance and be hazardous to health. The heat shields under the converter and the heat insulator above it should also be inspected for damage and loose fasteners.

To check for a restricted converter, you can use a vacuum gauge to diagnose the effect of a blocked exhaust on intake vacuum. By following the steps of opening the throttle until the engine speed is about 2000 rpm and then releasing the throttle quickly, you can determine if there is a restriction. If the gauge doesn't show a significant increase in reading or seems to momentarily hover around its highest reading before returning, it indicates a plugged exhaust system or converter.