Replace
you could have a pluged catilitic converter or a pluged fuel filter
Have you checked your exhaust system, your catalytic converter may be pluged.
replace your cad converter.....po410 means your converter is starting to get pluged up and does not let exhaust flow
sounds like the cadileadic converter or muffler is pluged
have you looked at your exaust system being pluged maybe your cataletic converter is pluged
may need a tune up, a new fuel filter, air filter may have a pluged catalytic converter
posable Catalytic Converters pluged
It may be a leak in the tube that connects the MAF to the throttle body. If the check engine light is not illuminated, it will make the job of finding the problem a lot more difficult. it could have a pluged fuel filter or a pluged air filter or a pluged catilitic converter. Maybe a bad fuel pump
Take the inside of the glove box out and look in and down to the right and you will see it. It has 10,000 wires pluged into it.
it depends on what car and engine. it could be your fuel filter, or a vacuum leak. your converter might be pluged also. these are some things to check out about the problem.
It would most likely be a pluged catilitic converter
sounds like pluged catalitic converter or egr valve