One of your belts may be loose or in need of belt dressing.
If it squeaks while it moves but not while it's at idle then the squeaks are body or suspension noise.
try the belt No I have same problem with my 03 1500 hemi..so far I have changed the belt and the tenssion pully, but still have the squeaking noise and when I turn off engin I can hear that squeaking.
Check your universal joints!
A squeaking noise when traveling over 40 mph could be due to several factors. Common causes include worn brake components, such as pads or rotors, which can create noise at higher speeds. Additionally, it might be related to loose or worn suspension parts, such as bushings or struts, that become more pronounced at increased velocities. Lastly, tire issues, like uneven wear or low pressure, can also lead to squeaking sounds while driving.
There are several things that can cause your Jeep to stall while idling. The timing may be off or your fuel filter may be clogged.
check tension on fan belt(s)
If the car dies while idling, the timing might be off. Other causes can include a clogged fuel filter or a bad spark plug.
Most people will tap the brakes of a car when their car is going downhill, usually to keep the car under the speed limit. The squeaking noise could be the brake rotors or the brake pads.Ê
A high-pitched squeaking noise while driving, unrelated to the brakes, could be caused by several factors. Common culprits include worn or loose belts, such as the serpentine belt, which can produce a squeak when under tension. Additionally, issues with wheel bearings, suspension components, or even tire noise can contribute to such sounds. It's advisable to have a mechanic inspect your vehicle to pinpoint the exact cause.
All what I can say is; I realise this noise around in the age of 6-8 in night while I go to sleep. At that time I thought this was the noise of insects and water boilers noise. It doesn't bother me. After that age I didn't have that. Now I am 58. About a year continuously more loudly and day and night I do hear. It doesn't hinder my work or my movement.
Most likely the brakes. Try to get someone to stand outside the car when backing up to try to localize it. Had this happen on a Toyota. Next brake job got hardware and pads replaced. No more squeal.
it maybe just a timing problem