2002 Mercury Sable Steering problems

In motion the car wants to keeps accelerating even when you hit brake. And will stay the speed you are going or go faster. And you don't have to keep pushing accelerated. From start the rpms go straight to like 5 to 6 to 7 rpms and takes about 30 sec to idle down. I have tried everything to fix it. It just won't fix!.... My power steering pump is brand new my rack and pinion is brand new. And my fluid still wants to over flow every time I get done driving it. I have tried everything to fix it can't and it's so hard...

2002 Mercury sable gs - 103,000 miles, never been in a collision, always maintained by the book. On april 2, 2010 at 8:00 am, I was pulling forward out of my parking spot when a loud thud and a grinding noise stopped me from going any further. This was a total surprise as nothing about the previous day's driving hinted at an suspension/steering problem. After checking behind both front wheels, I found that the left front coil spring had snapped and a plastic piece had been broken by the impact. No tire damage...

I took my 2002 mercury sable sedan in to the dealer to have the oil changed and the front left tire checked. When I called to pick up the car, I was told that the left front inner tie rods were loose and that the rear coils/springs were all broken. There are only 76,600 miles on the car. We are the only owners. The repair cost was nearly $1,000.00. This needs to be addressed by ford. Very dangerous. And unheard of for a 6 yr old car with low mileage. *Tr

Tl*the contact owns a 2002 mercury sable. While pulling out of the driveway at an unknown speed, the contact heard a rumbling sound coming from his vehicle. When he made it to the highway, the vehicle suddenly dropped to the ground. The contact was driving 20 mph at the time of failure. He was able to get the vehicle off the road and have it towed to bill wilson's auto body shop. The vehicle is currently at the shop being repaired at the cost of $570. The repairs consists of a new strut, spring, and alignment. The failure and current mileages were 73,000. Update 05/13/08 *bf updated