I changed my belts[ timing belt, balancer shaft belt and accessory belts too] I've driven the car for a few days already. The question is, the belts are making a Humming noise. Nothin loud, like if I had a loose belt or anything extreme like that. Just a Humm. I re-checked my belts and they are tight. Maybe someone can give some feed back on this matter. I do appreciate it.

 

You didn't say what year or trim level you had... but on some accords, especially 98-02 belt noise is normal. on older models and non-VTEC, excessive belt noise usually indicates over-tightening.

 

I should've specified the it's 2001 accord ULEV. My friends it's the weakest one of this Model.

 

what's that mean... the weakest one?

maybe has the lowest output numbers but most of it is identical to the other F23 accords. it's just been de-tuned to run clean.