every couple of weeks when i go out and try to start my car the battery is completely drained. i then jump it and it misses a lot after this. it will then start running fine after about 10 min of driving it. i am not leaving any lights on so why does it do this?

 

sounds like you have something thats draining your battery. this could be almost anything, like a trunk or glovebox light thats not switching off....

its not 100% clear from your post... is the car sitting 2-3 weeks unused, or is it driven daily, and this sometimes happens overnight?

Do you have a digital multimeter ? When everything is nice and cold, but your battery isn't dead, disconnect the battery plus terminal. put the digital meter in its '10 amp' mode, this usually requires moving the plus (red) lead to a different socket and switching teh meter to 10A. hook one meter lead to the battery's plus post, and the other to the disconnected plus wire harness. does the meter read any current, and if so, how much? ignore a spike of current that goes to zero in a few seconds, we're interested in steady readings only...

if you read current, even 0.05 amp or whatever, separate the extra 2-3 smaller red wires from the big wire, and measure the current between each of them and the battery plus post the same way, see if you can figure out which wire has the leaky circuit. one of those thinner red wires on a 240 goes to a fuse holder right near the power steering reservoir, this fuse is for the fuel injection system. another wire goes to the positive terminal on the left fender (black plastic cover with a pile of red wires) and this powers most of the rest of the systems in the car. the really big red cable goes to the starter and alternator only. I forget if 240's have a 3rd smaller wire, but people adding stereo ampliifers, trailer hitch adapters, and such often wire them directly to the battery, so these should be checked, too.

another thing to try is removing each fuse, one at a time, and measuring the current between the fuse terminals. only some of the fuses are powered when the car is off, I thin its 6-7-8-9-10 ?

 

yes it is a daily driver. i just got this car a month or so ago. i drive it to school every weekday. and every couple of weeks when i go to start it, its completely dead.

its usually a saturday morning

 

so it sounds like there's an intermittent load that drains it sometimes but not all the time. that will be even more fun to track down.

I'm still betting on trunk light or glove box light not switching off sometimes. both of those work even when the key is switched off..

 

that still does not explain why the car wont run right. It misses a lot after i have jumped it. but then after driving it for a few min it runs fine. why is this?

 

with a dead battery, everything is weak. lousy fuel pressure, lousy spark. 5-10 minutes of running, and the alternator gets the battery voltage back up to where it should be 12-14V.