The blower may come back on briefly after cycling off due to a delay in the thermostat signal or residual heat in the system.
check blower motor fuses and if Ok GENTLY tap blower motor with a/c turned on should start back up if so it indicates a bad armature in the blower motor and is due for replacement soon, if it does not start back up, it means either a short has occurred in the wiring or it is a dead blower motor
resistor for fan blower is in back of glove box, beside the blower itself.
The wiring, switch or blower has failed.
Remove the blower motor retaining nuts. Remove the wiring harness from the back of the blower motor. Remove the fan from the blower motor. Reverse the process to install the new blower motor.
The blower motor is tired. It will eventually blow a fuse and/or burn out the blower motor speed resistor. Time to replace the blower motor. Also check connections for high resistance damage (melted connections).
The front blower should have a resister to change the speeds. It is usually mounted close to or on the back of the blower motor.
it all depends of the setting of your bike, long term injuries can be knee problems, if you ride a road bike you can get back injuries and neck injuries from how you are positioned on the bike, a short term injury would be shinsplints and that's very rare unless you are cycling everyday for a long period of time. Be sure to stretch before you go on a ride pponline.co.UK/encyc/cycling-injury-choose-the-right-bike-to-avoid-injury-33612
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Remove the wiring harness from the back of the blower motor. Remove the blower motor retaining screws. Remove the fan from the blower motor. Reverse the process to install the new blower motor.
Take a 12 volt tester ( $ 4.00) and test for 12 volts right at the blower motor. If there is 12 volts at the motor then your blower motor is bad. If no power then trace it back. Some models have a blower motor resistor; some have relays .Have your Ford dealers parts department print you out a picture of these parts which will identify their locations.
Take a look at the back of the blower switch, you may see the plastic electrical connector and wiring melted, if so replace the switch and pigtail. Both are available at many auto parts stores.
Road bikes are not inherently bad for your back, but they can cause discomfort or pain if the bike is not properly fitted to your body or if you have poor posture while riding. It is important to ensure that your bike is adjusted correctly and that you maintain good posture to prevent back pain while cycling.