Hey guys i have a weird sound coming from my car.. It is at very random intervals but i hear it probably once sometime within every 15 minutes or so. sound resembles sort of a whine that you hear from a loud fuel pump... except it happens whenever it wants. Mainly noticing when the car is not running... I have unhooked the battery for an entire month The and heard the whining (took me a month to paint car and buff it out etc)every single day i worked on it ..... everybody who is near my car for an amount of time has heard it and asked what it is... ... Anyways i cant place what it is and it seems that it is coming from something near under the hood at least. Car is a 95 Eclipse GSX .... anyways ... i also noticed that if i let the car idle for a while the car will just want to stall and i can faintly hear this sound. car will bog down to about 300 rpm if i let it bog for 5 seconds or so it goes back to normal for a while or if i just tap the gas. I know this sounds like the ISC but i have replaced it along with the entire throttle body . Theres no difference ...also doesnt make sense that the sound is happening when engine is not running if it were the ISC... anyways i have 2 other 2g DSMS and a 1g dsm and none of them have had this noise.. i am sorta dumbfounded any wild ideas ?? only hairbrain idea i have is a pressure change between 2 fluid (maybe air) filled areas within the engine or evap system and it is causing this weird sound when "it" moves. ... only problem i have with this wild idea is the fact that my car wants to die when i hear the sound at idle... ok anyways enough rambling .. give me ideas!!