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drive shaft could be out of balance or tires could be out of round
yes
could be a tire out of balance or vehicle out of alignment
Loose universal joint(s) in drive train.
if there is no sata (serial ATA) device connected, this could be a hard drive, or cd drive etc,
It could, yes.
yes it is but you need to get it fixed . it could cause damage to your engine
Could be a universal joint. If front wheel drive, it could be the constant velocity joint. I am assuming you have an automatic transmission. If it is a standard transmission, it could be the throwout bearing.
yes.
A worn or loose out of adjustment drive belt could be the cause.
u knocking on it
well, when you drive with any of the four tires being low you will cause it to over heat, or it could be making a lot of sharp turns.