Sound like a fan motor bearing about to fail, lack of lubrication on that bearing, you could try spraying a bit of WD40 into the air intake, but a new bearing/motor is the real solution, sounds expensive in terms of labour! is it under warranty? Phil.
you have a bad alternater or belt
either your belt(s) or brakes most likely
if screeching only when backing up, it sounds like you have a problem in reverse gear in transmission or you have a problem with loose pinion in differential
When they don't feel like making noise and at night.
Lubricate.
Your chirping smoke alarm is making noise because it is indicating a low battery or a malfunction. To stop the noise, you can replace the battery or reset the alarm according to the manufacturer's instructions.
making
I here this too but I'm in balston. This needs to stop, it really disturbs a nights rest. Anyone know where the source is?
either replace them or add motor honey to go for a longer perion without noise....
Unplug it.
Bleeding the air from them usually helps.
If you get a noise complaint letter then it is best that you stop what ever is making the excessive noise. If the noise is violating the noise pollution law, then you have to stop asap before the police get involved and you get fined. If it is not breaking the law but it is annoying the community then it is best to stop anyway or you will end up with other issues such as neighbors damaging your property when you are not at home.