thump240z

When I press the brakes in I hear air. The brakes are not working good at all. I try to stop and it just slowly stops. Even when Im not driving I still hear the air noise when I press the break. I had to punch on the brake to avoid rear ending this arse who cut me off and now they are not working properly. Any help would be greatly appreciated.

How can I shut this electric fuel pump up from buzzing in my ear. I have no stereo and this noise is really irritating. Its mounted in the back under the car. Im not sure if this is where it goes but I bought it like that.

heres the deal. I start to hear this noise when I shift gears. (mainly first). Even when Im in reverese I hear this noise.Somthing seems loose or broke. I came to the conclusion that I needed a tranny mount, however i took it to the shop and they lifted me up and told me that its the differential. He turned the right wheel and the left wheel didnt budge. Is this limited slip or is something broke? I also noticed that my stick shift get warm after driving for about 20mins. any suggestions. Is their a dianostic test that I can do myself to to figure out whats going on. I was about to go out and purchase a rear end, but I really cant afford that.