That usually means your ground wire is not grounded very well. You can also get a ground isolator from Radio Shack.
yes
lack of oil
Debris in the hoses or reservoir could cause the motor to overheat. Also, running the pump without fluid could do the same.
The thing that could cause a knocking noise in your car is the same thing that could cause it in all cars A rod that or a flat lifter. it all really depends on where the knock is if its higher and to the back of the motor, it could be a motor mount
could be the resistor on blower motor is bad
Could be the starter relay
Freeze plug at the rear of the motor. Between the transmission and the motor.
No such thing as good wireless speakers. Too much interference from other sources such as cell phones, am/fm, CB radio, two-way radios, etc.. Hardwired speakers are the only way to get clean sound.
if the motor is turning then it could be off the track or a gear might be stripped.
If overload is not the cause, then high temperature could be caused by blocking the cooling of the motor.
There could be two separate problems. Check the blower motor resister, and the ABS sensors for problems that could cause this.
If it is a water cooled motor, then you are burning coolant, most likely through your head gasket. It could also be water contaminated gas.