I had the porsche sitting there for 9 years and i put in a new battery! But as soon as i connected the wires (minus first) the alarm went on. Now the engine wont start. but every thing electronically does. i turned off the alarm and tried all the electrical stuff ( lights,wipers,windows,)it all worked. But the engine just makes a stuttering sound when i turn the key! I don't know much because im only 16 , so i need much help in trying to fix it, so be specific. THANKS!!!!