Car makes a vibrating/humming/moaning noise

[47_MasoN_47]

Hey guys, this has been going on for a while and it's getting pretty annoying. It will make this moaning/humming type noise when the heater/AC is turned on and I am off the throttle (either idling or braking, coasting, etc). If I'm on the throttle it doesn't make it. If it's idling and making the noise, I can blip the throttle and it will stop. It doesn't seem to affect the car's function or anything, but it's really annoying. Anyone have any ideas? I thought maybe it was a belt but it doesn't seem to be.

[IllusionX]

water pump?

it's just a hint, cuz mine did it when i'm off the throttle, but it is fine otherwise. Turned out to be the water pump bearing on it's way to being ceased up.

[47_MasoN_47]

That's no good. My car has 66k on it, is it normal to have to replace the water pump that early?

[47_MasoN_47]

Oh dear. So I did some reading and apparently there's a notorious spray that happens when the water pump goes bad. Well mine did that. About 2 years ago. It's not been running hot or anything, how has my engine not exploded? Does it just "fix" itself after a while or what?

[IllusionX]

i can't tell. lol

mine did not splash.. just made noise, and i had about 35000mi when it failed.