I ended up having to buy a used pump on fleabay that was "rebuilt 5 months ago". I got it today installed, and its not functioning properly. I'm really ticked off about it, I spent $250 on it :evil: . The trac, abs, and brake lights flicker on and off every time I push the brake. I decided to replace the pressure switch with the one from my old one (known to be good) and the same symptoms are showing. I'm thinking maybe its the accumulator but can't replace it at the moment, anyone have any input? All help is great appreciated, thanks in advance.