Can a bad catalytic converter cause a rattle?
If a catalytic converter becomes old or damaged internally from excessively rich fuel mixtures, the catalyst coated honeycomb meshes on the inside of the converter can collapse or break apart, causing a rattle.
What are the signs of a clogged catalytic converter?
1 Engine accelerates poorly or is hard to start. These issues could indicate a clogged catalytic converter, restricting the flow of exhaust out of the engine. 2 A sulfur or “rotten egg” smell. 3 rattling noise when starting the engine 4 Failing the annual or semi-annual emissions test 5 Vehicle warning lights. …
Can a bad catalytic converter fail an emissions test?
Some states in the U.S. require a diagnostic check of the engine’s computer to pass an emissions test. A trouble code will be stored in the car’s computer if it has a faulty catalytic converter. Should this pop up, the car will fail the test.
Can a lazy oxygen sensor cause a catalytic converter problem?
You may need to fix other engine problems in order to solve your catalytic converter problem. A lazy oxygen sensor might falsely indicate a catalytic converter problem, yet not set a DTC for itself. A technician can determine if the sensor is responding as it should.
Why does my catalytic converter rattle when I turn it on?
When you hear your catalytic converter rattling, it may be on its last leg. But what is causing it to rattle? Catalytic converter heat shield rattle is a pretty common occurrence that is caused by the heat shield becoming loose. Often, one or more of the bolts that hold it in place has broken, loosened, or become overly corroded.
Can a bad catalytic converter lead to engine failure?
A bad or clogged catalytic converter can ultimately lead to engine failure, so it’s important to address the issue promptly. However, having catalytic converter problems doesn’t necessarily mean that the converter has to be replaced.
You may need to fix other engine problems in order to solve your catalytic converter problem. A lazy oxygen sensor might falsely indicate a catalytic converter problem, yet not set a DTC for itself. A technician can determine if the sensor is responding as it should.
1 Engine accelerates poorly or is hard to start. These issues could indicate a clogged catalytic converter, restricting the flow of exhaust out of the engine. 2 A sulfur or “rotten egg” smell. 3 rattling noise when starting the engine 4 Failing the annual or semi-annual emissions test 5 Vehicle warning lights.