idling noise

[confused]

Hi all, just stumbled upon this excellent site! I feel ashamed of the way I have been taking care of my rolla, but am determined after reading the post here, that i wanna keepmy rolla for long and take due care!

I have a 95 corolla, done 165k miles. only maintenance i have done (after a service at 90k) is oil changes and tires! so i realize a lot needs to be done. In the meantime, (at 120K) took the car in for a grinding noise and was told it was a transmission problem!The differential was off and the guy milked me 2500$. Late I realized the noise disappeared after i changed wheels!!!

Now, my car idle noise is louder than when engaged and i can hear all the gears change as i pick up speed- which i never did before the transmission job. will changing timing belts etc, make this better?
Thanks

[Foolish86]

no timing belts would have nothing to do with your gears grinding. Does it always make the sound or only in turns and shifting gears?