When I drove my crx home from work today, alll of a sudden this loud,grinding,crunching noise comes on. Its coming from the passenger's back wheel. Do any of u guys have any idea what it might be? The noise only comes on when I accelerate and when I brake. I think its my rotors,any help?

 

Your probably right. If your pads are really worn down, it will make that noise. Also check that your caliper is not locked up.

 

Sounds like you need new pads and new rotors.