check water in the water tank and fill it up.
As for why it blows only on the high speed you most likely will have a bad blower resister and for the noise, it could be a bad blower motor, bad blower wheel or trash that is stuck in the blower wheel or housing.......
heat works in back not in front front blows hot for a few mins then cold
yes, the fan bearing is worn out
Check the resistor if it only works on high Check the resistor if it only works on high Check the resistor if it only works on high
probably the heater core is plugged
blower motor resistor thermal limiter is blown. Replace the blower motor resistor.
sounds like you need to replace either the thermostat or the temp control switch
Does the blower work? If not the problem is likely the fuse or a failed blower motor. If it works but blows cold air you probably have a broken engine coolant thermostat. Have you checked your coolant level?
probably a defective blower motor. not really, the blower works at all times
if the blower motor still works, somebody probably bypassed the heater core in the past.
try wiggling the wires at the blower resistor if don't work then tap on blower motor
the resistor for the blower motor is busted blower works on high with out it