04 civic is jerking when i accelerate and when i brake, what could this be

What is your question?

I recently purchased this car with the the understanding of the converter and mount was supposed to be just worn down, but everytime I get in my car and start it up it sounds OK. Once I put it in drive and press the gas to go it jerks hard but only a short time. Then when I brake most of the time it does a light jerk. I now am hearing a lot of differnent noises coming from under the hood when I am stopped but still in drive. I know I need motor mount replacement and a new converter, I think on the converter. Can someone Please help!

What makes this problem better or worse?

I have not found anything that makes this better.

How long has your 2004 Honda Civic had this problem?

I recently purchased on the strength my so called x-mechanic said the motor mount us warn but it's fine.