valves,valve pushrods or lifters are the most common causes.
Needs a tune-up, and bad blower motor.
Probibly your blend door motor is stripped out. Remove motor and check door operation manually
looks like the starter motor. the clicking sound appears to be the solenoid on the starter motor. when you turn the ignition, the solenoid click and its supposed to make contact to the motor. if the contacts are dirty, then the car won't start. repeated clicking will eventually make a little contact allowing the motor to turn. try changing the starter motor or servicing it. you can do it urself. remove the motor and pull the solenoid out. clean the brass contacts. they should be under the connections where the wire from ur battery connects. if it seems to be too much work, just get the motor replaced.
blower motor actuator needs to be replaced.
it will fit, just be sure the motor mounts hook up or you'll have to make adjmts.
Some hummingbirds make a clicking sound.
The same motor, block, heads ect. I installed an 08 4.2L engine in my 97 F150 that had the OEM 4.2L engine. I had to make my own wire harness from the engine to the ECU and some other modifications for fuel & throttle.
Your u-joints are worn out.
miss what?
Clicking sounds coming from the vehicle may indicate there are loose valves. Aside from getting a mechanic checkup, adding high mileage motor oil can also be helpful.
valve who needs ajustment
It is low on freon.