I recently heard there was a front coil spring recall on my 2000 Mercury Grand Marquis. A couple days ago, I noticed the front wheels have been crooked off and on, a friend of mine said the camber and caster part might be loose? The tops of the tires pull in and I don't know if that's a major (expensive) repair.

SOURCE: hi there...i got a 1997 mercury grand marquis in

you need to have the cv shafts checked for wear.

SOURCE: was there a recall on 2002 mercury sable front

No recall
Your front suspension is a McPherson struts assembly type.
Maybe I do not have the right english wording to satisfy the purists but roughly the complete strut assembly unit at the bottom is attached to the knuckle by two strong bolts and at the top to the vehicule frame by 3 nuts on studs. The coil spring you're talking about is mounted and compressed between the strut assembly base support bracket/seat and the top plate of the assembly. By the way, the built in shock absorber is the component you see going from the bottom to the top trough your coil spring. To remove the coil spring or replace the strut itself you have to compress the coil spring using a coil spring compressor tool. It a relatively dangerous process for beginners because the coil spring is under important tension.
If you plan to keep your vehicule several years have your coil springs replaced by new one. In this case I would suggest to change both for an even behaviour of your vehicule. The main reason they broke is their aging but mostly due to bad shock absorbers (struts) so by the same time have new struts installed. For coil springs, struts parts and labour it could cost you $1,000 and more to have it replaced (both sides) depending on where you have your mecanic done.

If you don't plan to keep your vehicule on a long term, I suggest to get a complete used struts assembly for this side (includes struts and coil spring) at a scrap yard for $125 and less and have it installed for approx. 1 hour and less of labour time. It could be a cheap solution.

Do not have new tire installed before you fix it otherwise you will scrap the internal structure of you tire.

Hope it will help
Dan

SOURCE: where are the spark plugs located on a 2000 Mercury Grand Marquis

There are eight COPs (coil-on-plugs) to remove. Using a 7mm or 9/32" socket, remove each bolt securing each COP to the intake manifold on top of the engine. Remove all eight COPs, and the spark plugs are underneath. When replacing the spark plugs, use only the proper Ford/Motorcraft plugs, even if they cost twice as much as the aftermarket ones. You will avoid further headaches this way. Hope this helps.

SOURCE: need to replace both front turn signal light bulbs

Pop the hood, there is a tray that sits over the radiator, if the locks are still intact, twist them until the tray comes free, (There should be 3 plastic locks) remove the tray. Now you have access to the lights. There is an orange plug on both sides (L&R Headlights). Turn the plug until it frees up, then slide plug out of headlamp fixture. Then simply pull the bulb out and replace with new bulb.

SOURCE: 2006 mercury grand marquis has clicking sounds front area of car

Have your front c.v shaft's checked out, when shaft are bad it will make a clicking noise.