change the blower motor the bearings have gone bad in it
Look behind the glove box. under dash.
A bad heater blower motor resistor would effect one or more blower speeds other than high.
maybe your blower motor relay is stuck or burned together ???
The Mercury Cougar blower motor is located on the firewall in the engine compartment. The blower motor can be seen on the passenger side of the firewall.
location of relay blower motor 1997 Mercury mystique
Under dash at RH side, mounted with 3 bolts. R&I about 3 minutes.
If your blower is working on some speeds but not all, more than likely the problem is a defective Blower Motor Resistor Pack. The switch rarely goes bad. Just a thought.
No repairing those blower motors, replace it with a new one.
front of the motor
Without knowing what model year the questioner is referring to...Budget somewhere around $35-60 for a blower motor - likely to be closer to the lower endSee "Related Questions" below for more
Remove the wiring harness from the back of the blower motor. Remove the fan from the front of the blower motor. Remove the blower motor retaining nuts. Reverse the process to install the new blower motor
Remove the glove box and the blower motor can accessed.
According to the 1999 Mercury Sable Owner Guide : ( 5W-30 )
Begin by removing the wiring harness from the back of your blower motor. Remove the blower motor retaining bolts. Remove the fan from the front of the blower motor. Reverse the process to install your new blower motor.
It could be a thermostat that is stuck open or maybe a bigger problem...like the blend door is either jammed or broken as well.
If the noise is a squeaking sound, it could be coming from the bearings in the blower fan. It could also be coming from a worn bushing or bearing in the blower motor.
Chck behind the glove box area
Remove the glove box. The front blower motor and the resistor can be accessed from there.
If the blower works on some speeds and not on others, you may not need a motor. Instead, you may only need a new blower motor resistor.
There is no fixing a broken motor mount. Replace them with a new ones.
Look on e-bay
Ummm...in the engine?
Sounds like the blower motor has seized up - time to replace it. See "Related Questions" below for replacement procedures
You see that knob you turn to run the blower? That's it.
front right, rear right and transmission.