Bad Battery: the clicking is the starter solenoid relay making contact but the battery is not putting out enough amps to turn the starter
I actually had this problem with my first xbox. It turned out to be the hard drive.
A clicking sound, when trying to start the engine, indicates a dead battery or poor (dirty) battery or starter relay connections.The clicking sound is the starter relay(soleniod) not getting enough power to hold it's contact points together.
The clicking sound is your a/c unit trying to engage. I would have freon pressure checked first, if not, a/c unit may be bad
the clicking sound is the blinker. when you signal to turn with your blinker the light flashes and makes a clicking sound.
The "clicking sound" is probably a circuit breaker. If so, you have a short, or overload, in the wiring somewhere.
low on freon. have an a/c check. most likely there is a leak in the system due to the age of the vehicle.
Location of clicking sound not stated but: My 95 S-10, 4.3L engine was clicking when it was running. Turned out to be the fan tapping against the fan shroud, motor mounts were wearing, causing fan to hit this shroud. This may be your problem but you didn't state what area of vehicle sound comes from.
AnswerIf it's a rapid clicking sound that becomes more rapid when the fan is turned up high, you probably have a foreign object like a leaf stuck in the blower.It sounds like your Air door actuator or temperature actuator
I will take a stab at the answer....... Do you live in a hot climate? If so, when the engine is hot and possibly a new exhaust was installed, the clicking would be the exhaust cooling off. Sound good ?
probably have a bad relay, that was my problem.. Are your turn signals not working, but your hazards lights are? and if so, do you hear a constant clicking sound, like your turn signal is turned on? Does the clicking sound go away when you hit the brakes? It is the relay.
Your flasher relay box may need to be replaced, but could also be an electrical short.
It sounds like the starter relay is the clicking sound. Check to see if power is leaving the relay when the switch is turned to starting mode.