I have an R33 GTS-T 4door ('94), and just recently when I start my car there is a noise coming from the dash or somewhere in that general area that sounds like a pulsing beat. It sounds as if something is trying to move or open and is getting stuck or held back by something. Kind of like the sound a pedestal fan makes when you try and stop it from oscillating. My friend, who dyno tunes ands works on alot of Skylines says its a common problem with them but he is not sure what it is.
Please help. If anyone knows what it is and how to fix it please let me know.