Humming Noise coming from motor Options

[kloudkicka]

Hey guys, not too sure if this is where i should be posting but, this is the first winter i'll be driving my car since i swapped the 3rd gen 3sgte and out of nowhere i hear a loud humming noise that gets loud and quiet and so on and i have no idea what it is, i try to take a listen as to where its coming from but i really can't tell, can anyone help? or has this happened to anyone else? kinda sounds like somethings struggling to move or turn

[enderswift]

is it rev dependent?

maybe its something vibrating at its harmonic frequency? whenever I rev my car to 4000 and let of the gas, a whole bunch of stuff rattles in my interior as the tak falls. Thats just because the engine is vibrating in the perfect way for those bits to react.


a video would be the best way for us to be able to help you

[kloudkicka]

ya it has nothing to do with the rev, even when the motor isnt running and i just turn the key to turn the battery on i hear it, i tried recording it with my phone but my blackberry wouldnt catch the noise of it, kinda like you gotta be sitting in the car to hear it which sucks

is it rev dependent?

maybe its something vibrating at its harmonic frequency? whenever I rev my car to 4000 and let of the gas, a whole bunch of stuff rattles in my interior as the tak falls. Thats just because the engine is vibrating in the perfect way for those bits to react.


a video would be the best way for us to be able to help you

[presure2]

fuel pump? walboro pumps tend to get louder just before they die from what ive read.

[Culpable04]

he says he can hear it with the car off and key at ON position, so it has to be the fans. fuel pump doesn't start working until you crank the engine, and there is nothing else spining unless you hard wired your intercooler water pump to run 100% of the time.

[kloudkicka]

ok so i took another listen and i think its my fans, could be that their frozen or something? cuz i started hearing it after i car washed and its freezing cold here, anyone else have any suggestions? thats just wat i think it is, not sure if that is the actual problem

[azn87]

but if u think that the fans are just frozen, then after u drive for a while the engine temp should melt the ice and make it normal, but again ive never lived in a place where it dropes below freezing point

[kloudkicka]

but if u think that the fans are just frozen, then after u drive for a while the engine temp should melt the ice and make it normal, but again ive never lived in a place where it dropes below freezing point

ya its cold to the point that i dont think i drive my car long enough for it to melt lol, but the sound is getting quieter after every drive so this could be the problem

[barterj]

maybe spray the fan motors with WD-40

[kloudkicka]

maybe spray the fan motors with WD-40

ya, i could try that out, but maybe on a warmer day, hopefully it'll go away if it warms up too