Its a huge possibility your starter is out.
Starter motor going bad. The starter motor is the first electrical device inline from the battery.
It could be that the battery is not fully charged or that the battery is incapable of holding a full charge, or that the starter is faulty or that you've just been trying to start the engine for a long time and ran the battery down. Understand that a battery is just an electrical storage device. It only STORES electrical power for use NEXT time you want to start the engine. * If the battery is not fully charged (it didn't get enough electrical energy put back last time it was used), it may not have enough electrical energy to start the engine. * If the battery is going bad, it may not have enough electrical energy to start the engine. * If the starter is going bad, it may pull more energy from the battery than it can provide.
Yes, if the battery is weak it will not provide enough electrical energy to properly operate the starter.
My understanding is that you are hearing the starter "click" but it does not engage. If that is correct your answer is: Typically either 1. the battery isn't fully charged (either a problem with the charging system, something is running the battery down or the alternator isn't charging properly) 2. a poor electrical connection somewhere between the starter and the battery or 3. a problem with the starter or solenoid.
Look for a loose or corroded positive battery cable at the battery post - or a loose/corroded battery terminal on the positive cable.
Is starter working?
If a 94 Thunderbird starter will not turn over, the battery may be dead. The battery should be charged with jumper cables.
Test the battery with a digital voltmeter. You should get a reading of 12.6 V if the battery is fully charged. If the battery is fully charged then you know the alternator is functioning properly and your problem is more than likely a defective starter.
Because there is insufficient energy to the starter and/or ignition system. Possible reasons: * That typically occurs when the battery is not fully charged or incapable of holding a full charge. * A faulty battery can cause the problem; if one or more of the battery cells are incapable of holding a charge, you could experience what you describe. * A weak or faulty alternator could result in a partially charged battery. * Poor battery connections or starter connection could result in insufficient electrical energy reaching the starter motor. * It's also possible that a faulty starter motor is drawing too much current.
The function of a battery is to provide electrical energy to devices which are connected to it.
If you are saying that you have reason to believe that the battery is charged, yet the starter won't crank the engine, it could be: starter, Neutral/park lockout switch, Bad electrical connection or Keyswitch.
In the car electrical system, the starter motor is the first stop after the battery, so the problem has to be with that.