When I bought my 96 GSR the ABS unit would pump up every 5-10 minutes. The problem was a leaking accumulator (the cylindrical part on the back side of the ABS unit). I was able to buy a small o-ring from Acura and I replaced it. Problem solved. It was not an easy fix as you have to take the entire ABS unit out of the car to get to the bolts on the bottom of the accumulator to get it loose. There is no problem bleeding the unit after it is put back in (bleed the brakes like you normally would). Look for brake fluid under the ABS unit, this will indicate leakage of the unit. If you don't want to mess with it, you can just unplug the ABS unit and the brakes will operate normally, albeit without the ABS. Good luck.