Car:
95 S14, stock engine/trans wise, minus a cusco 2-way LSD.
Symptoms:
My car will make a LOUD humming sound on deceleration, and at idle (only if ithe idle is higher then 800 rpm). It's quiet when the engine temp is cold, and gradually gets louder as it reaches operating temp, its the loudest once it's fully warmed up. The clutch being engaged or disengaged has zero effect on the noise. The only way it stops making noise, is if my idle is at or below 800 rpm, or the engine is receiving any sort of load (accelerating or cruising).
The sound doesn't get louder or quieter from speed (from what I can tell), but at higher speeds, I'm assuming because of wind and road noise, it becomes a little less audible to my ears. It's extremely annoying, I can clearly hear it in my car, even over the radio, and outside the car its obviously more audible. Does anyone have any idea what this might be? Or where I can start checking? This is a very frustrating noise to deal with, and it's embarassing to drive around with it making this noise.
I can best describe the sound of the noise as a weak, and almost dead car horn being honked continuously. I've checked all over in my engine bay, the noise definately sounds like its coming from around the firewall by the transmission. It's not effecting the way it drives or anything, it still feels fine driving around.
