exaust

[blackbeast]

i have a 2001 olds alero 2.4L
i have been chasing a viberation around can only tell when i'm at idle speed it kind of feels like on an older car when the carb was dirty it would hesitate like it was going to cut out.
i have had the iac checked the fuel regulator replaced the fuel filter and had the injectors cleaned so i'm thinking maybe has something to do with the cat converter.
any other suggestions would be greatly appricated.

[01silveralero]

solution to all problems now is seafoam

[blackbeast]

no i have tried that i use it every 2000 miles

[pawzbear]

*Exhaust*

[jayson_waltz]

i'd have a backpressure test done on the cats. 1 or both might be clogged.