Probably not. They would have to be clogged solid not to let engine idle in which case the engine would not run at any speed. If they were semi-clogged the engine would idle but hold engine back from revving up.
It could, yes.
Catalytic converters do not rattle. If it does it will need to be replaced as it may block the exhaust. Loose heat shield?
Yes, it could restrict the exhaust and cause problems
Our 2000 mercury cougar does not start up and stay running. We were told the catalytic converters went out on the engine. Could this be true!
They could, but not always.
belt buckles, dentistry items, catalytic converters is all I could find on this subject
Depending on the engine it could have 2 or 3....maybe 1
could be a number of reasons etc bad thermostat,clogged heater core,leaking heater core,
The Oxygen (O2) sensors located in the catalytic converters help to keep the vehicle running cleaner. If an oxygen sensor goes bad, the vehicle might start to misfire occasionally. The catalytic converter can become plugged up if the oxygen sensor is not working properly. This could lead to the vehicle not running at all.
A partially clogged converter can get red hot. It could possibly start a fire.
Do you have a check engine light on? COuld be a Solenoid that determines boost for the Turbo (if equipped), clogged fuel filter, clogged Catalytic converter, dirty air filter
Could be a clogged catalytic converter, rotor cap is bad, fuel filter is clogged, fuel pump dying.