You blew your transmission, took out the reverse gear. You'll have to take it to a tranny shop and get it rebuilt (not cheap), or replace it yourself with one from a scrap yard. ($600 in parts, a weekend to do it)
Check the transmission fluid level.
You need a new gear box (transmission)
O2 sensor or vacuum leak
Best guess, your Transmission is shot. You'll need to call a mechanic and tow it to the shop to get it checked out
There could be several things wrong with the 2006 Taurus. The car may need transmission fluid or even a new transmission.
If your Pontiac runs a 700r4 gm transmission you have stripped a reverse input shell. The transmission needs to come out for repair.
Remove the transmission dipstick and read it, it will tell what fluid to use.
that sounds like your transsion you should have it looked at although you can drive it with out reverse for quite a while
Possible shifter or linkage problem? ie: not actually going into reverse. Ummmm, you didn't zoom the tires in reverse and blow the gear did you... Hope that helps.
i am sorry to say but the low and reverse band has went out of your transmission and you need to replace it before the high bands go to
probably something wrong with the transmission like a gear fault or a transmission glitch or overheat. Take it to a repair shop or do some test maitanenence yourself.
First check your fluid level(refer to owners manual for exact procedure). If it is not low, then you have a bad transmission.