I have a 99 Century that will not start. When I try starting it the starter keeps clicking but will not turn over. I tried jump starting but got same results. I had starter replaced about a year ago with similar problem. I tried tapping on the starter with a hammer but it did not make a difference.

How do you jump start from starter?

When trying to start the starter makes clicking noises all the time the key is held to start. Is this normal or should it just click once?

Can you push start this automatic?

The battery is less than a year old.

 

You cannot push start this vehicle.
Batteries can go "bad" at any time.
Jumping from the starter isn't easy so forget that.
The fact that you are getting a series of clicks indicates insufficient voltage to hold the starter solenoid engaged.
Sooooo, lets look at the battery cables and where they connect to the battery. Most of the time the positive cable has corrosion under it and is not easily seen. If you are going to check it and clean it , A wise move would be to remove the negative battery cable first. That way if when removing the red positive cable you won't get involved doing unnecessary welding. After doing the check and clean stuff , if it still won't start can you jump start it with another vehicle? If it starts then, you could have a defective battery or the charging system may not be putting out enough to keep the battery charged. Let us know if the cable procedure solved the problem.
There is one quick you can easily try , put the headlights on and try to start it. What do the headlites do? Nothing or go out?

 

I tried jump starting it but it did the same thing. The lights were bright when jump starting so I will clean the battery connection on the starter along with the battery posts. Thank you for your response.

 

Cleaning the battery terminals took care of the problem. I had ruled out the battery terminals when jump starting did not work. While I had the battery terminals off I tried jump starting to the cables but nothing happened. Apparently the screws that hold the cables to the battery don't make contact with the cable until screwed into the battery clamping the connector to the battery. Thank you for the help.

 

Thanks for the update.
Another lucky shot, maybe I should play the lottery today, just kidding .