When we got it, the 'check engine' light was on, apparently because of an EGR valve (?). Cost about $600. Also had to replace the front mirror.
First real cold day it didn't start, the coil pack needed to be replaced.
A/C (!) stopped working, charged it back up, still works after 3-4 months.
Had to get new tires.
Seats and interior are a little creaky, and the A/C blows out disintegrating bits of duct seal (spongy stuff).
Electric window, front passenger side, failed. Had to take it apart (pop rivets), fix, and replace. Not too expensive.
I needed a safe, cheap, reliable car that would last for 5-6 years for my son. That narrowed it down to a late 80's, early-to-mid 90's LeSabre/Bonneville/88/etc (95 and later the 3.8s were screwed up). Found this owned by an elderly widow (sold by her son) ; it was very clean and well cared for, with no rust, but some scratches. $1500 purchase price plus required repairs was a little steep, but not bad, and it was so clean and well cared for, inside and out, I decided to go for it. Plus, my son was driving me crazy looking, so I had to get something before too long. Luckily, he likes the way it looks and handles.
I'm used to a 1.6L Prizm, and the 88's 3.8L has got 10X more power to it. Goes any speed you want (I don't think my son goes too fast, but perhaps I'm kidding myself). A little boaty, and the brakes are a little weak, but after driving the 88 around, I'm having a hard time buying a economy car for myself like I've always done. If you can find one without much rust, I'd recommend it. It feels perfectly reliable.
August 2009, Still have this car, my son still drives it, two years out of high school. Leaks a little at the top of the windshield. Mostly maintenance free. Still a good deal - glad I got it.