Lincoln 1997Town car.

Help!! My car has problems..making me and my husband crazy! We've had it aligned, balanced, rotated, etc...last year took it to 3 different shops..never did get the shimmy out completely...shudders at 45mph...the front end is so out of whack that the tires keep wearing out from the outside in....now, it is also making a clanking sound in the back on occasion..sounds like a metal part clanging against something...it will pull to the right all of a sudden...can't relate it to any particular speed at which it does this, and will pull to the left when I come to a stop....also, front end makes a grinding sound when I break and a kind of squeaky sound when I go over bumps in the road...I'd love to get a new car and just forget this one, but it's been a decent car till now, and can't really afford a car note at this point. My husband has changed the break pads not too long ago...does this when needed, and has done it for years...never had any of these problems before. It's a 1994 Dodge Spirit....HELP!!!!

I have a 1999 Mercury Mountaineer, 5.0 L, V8. When I accelerate I hear a hissing/light rattling noise coming from underneath where the accelerator is. It doesn't affect performance, but I hear it every time I accelerate and it goes away when I am coasting. Any ideas?