IDLES HIGH

MY CAR IS A 1996 FORD TAURUS GL WWITH A 2001 ENGINE. THE 96 HAS ABOUT 155,000 MILES AND THE 2001 ENGINE HAS ABOUT 125,000 MILES. IT'S A 6 CYL. WHEN I START THE CAR IT IDLES AT ABOUT 2000 RPMS AND DOES NOT EVER STOP. THE CAR WILL DRIVE ABOUT 25 MILES PER HOUR WITHOUT ME EVEN PRESSING THE GAS. WHEN I PRESS ON THE BRAKE THE CAR REALLY DOESN'T SEEM TO WANT TO STOP. GHANGE THE EGR BUT NO HELP. I HAVE TAKEN IT TO MANY SERVICE STATIONS AND NO ONE SEEMS TO KNOW WHAT THE PROBLEM IS. I AM STARTING TO THINK I SHOUD OPEN A SHOP AND GET PAID FOR NOTHING. I AM SERIOUSLY IN NEED OF HELP. MY 17 YEAR OLD SON DRIVES THIS CAR AND I AM AFRAID OF THIS PROBLEM. PLEASE HELP IF YOU CAN.