4Runner won't start, kills batteries

[Trampmastafunk]

4 runner has been running well for a while, but recently i went to start it and it wouldn't even turn over. I put a new battery in it, and it ran fine for a around a week or two, now that its been sitting for another week or so, its back to not turning over. When I try to jump it, it turns over once, then starts clicking rapidly. Any help is appreciated.

EDIT:Its an 01 with a 3.4L

 

[Even Steven]

Sounds like your alternator is faulty. Have a mechanic check to see if your charging system is working properly before you replace your battery again.

 

[toto]

Or, it sounds like something may be drawing too much power and killing the battery. The radio and a lot of other things have power all the time, so a faulty device could be a problem.

Here's a thread that talks about how to check for that.
http://www.toyota-4runner.org/showthread.php?s=&threadid=17610

 

[Mark86]

When you hear the clicking, it usually means there is not enough battery power. I would look into the alternator as well.

 

[Anglr200]

I had this same problem (car not starting after sitting for a couple days), but no clicking or anything when I turn the key... radio and ac fan working. Going to have battery tested. Any other ideas?...