Chronic problem with very slow windows; Ford attempted (?) multiple fixes to no avail.
Idle air control valve replaced in 2005 at 52,014 miles (car cold-started, but wouldn't stay on when accelerator was released) : repair cost $200.
Excellent engine and overall durability.
I love it when people slow down thinking I'm a cop! (hate it when they realize I'm not, and give me the finger as they zoom by enraged at having slowed down "unnecessarily"!). ;)
Total car care costs duly recorded on a spreadsheet comes to all of $2,681 as of May 2009, including: regular oil changes; 3 each of batteries, all tires, and air filter changes; 1 transmission fluid change (fluid was very low and transparent after only 20,000 miles, but Ford said it was "normal" and, unfortunately, it was beyond the 3 year warranty; I got it done at a gas station) ; 2 radiator flushes; a couple of lights; oddly, lots of wiper replacements and blades; added 1-1/4 ton standard U-Haul car hitch (regardless of trailer size, car drove like a dream with hardly noticeable decrease in mileage, even with mountainous terrain).
Petty personal issues: car horn needs to be pushed in just the right spot; radio buttons difficult to reach (I'm 5'10") ; water dripping in when trunk is lifted after a rain has long since gone; edge of inner trunk lid constantly cuts me when I reach in to open it (I'll never learn!).
A good car indeed, you I notice you are at 90,000 miles and you noted that you have changed the transmission fluid once. Your 1999 should have the transmission fluid changed every 30,000 miles. Check your owners manual.
I wrote the comment about the Transmission Fluid change. You should have a technician check the fluid first before changing.
Yeah, nobody is going to mistake you for a cop when your driving a Grand Marquis, bummer.