you should look for it to stop working shortly after you get it home.
$1500 for a 150k mile, 12 year old car??? christ. are you looking to break up with this girl???
buy something small, with lower mileage, and that gets better gas mileage. i was just forced by my wife to sell her '99 nissan sentra---and i parted with it for $2500. 114k miles, maintained by me, and pretty much flawless for an 11 year old car. oh, and 27/36mpg. that's what you need. if you can't afford that kind of money, then there are still smarter choices then the car your going to get raped over.
you need to run away from this car before you waste $1500. my father-in-law just laid a northstar powered caddy to rest as it split the block, and i'm not sure it had anywhere near 150k miles on it.
see, we just saved you $1500