[FTM-1]

Yep it can be anyone of them problems listed by 97_RLer.
My 2000 TL has been doing this for awhile now I know its the Front Rotors & Brake Pads. Iam do for them again also I need fornt ties & alignment.
If your car does this at speeds like braking from above 40mph it may be the rotors & pads. I will get my rotors resurfaced & a new set front pads as always will be put on. I have been thru this drill several times in the 8yrs I have had my car. This is most likely your problem & your dealer should have notice this. When I took my car in a few months ago for other problems they noticed quite a few problems with mine. The steering wheel shaking when braking. I told them I knew that. They also said my battery was reading low & I needed a new positive battery cable. The dealer did not lie the battery was 5 years old. I told them I would purchase another Sears Die-Hard. I purchased a new battery this mournig will let Acura do positive cable Monday,
The front brake rotors resurface & pads will have to wait a few more weeks.
New tires in the front will have to wait a bit longer along with alingment.
This is not my primary vehicle anymore so I have to do things when I get money.