U NEED TO REPLACE YOUR SOLENOID, IHAD THE SAME PROBLEM.
your battery is dead or the starter solenoid
try charging the battery before you replace the starter
Corroded battery terminals, defective battery, or starter.Corroded battery terminals, defective battery, or starter.
starter
Dead battery, corroded or loose battery or starter cables, defective starter or starter solenoid, loose ground connection.
Batteries don't "click," but other parts do. If you're hearing that "click," it's probably the starter solenoid trying to engage. Either the battery's charge is low, the starter solenoid has failed, or the starter motor itself has failed. On some older cars, especially Fords, the "click" could also be a remote starter relay.
That clicking sound could be the sign of a weak, if not a totally discharged battery. Or, it could indicate a defective solenoid in the starter, or a defective bendix spring in the starter. If you are convinced that the battery is not the cause, I'd focus on the starter.
If you know the battery and connections at the battery are good then it is more than likely a defective starter.
dead battery
Double check the battery cables at the battery and at the engine, be sure they are clean and tight.
your starter might be going out does it click if so its your starter if not than maybe battery if not battery than its the alternator
A fast rapid click is an indiction of a weak battery. A single click is an indication of a failed starter.