It only works on the highest speed?If so it could be a bad blower motor resistor.Do you have a multimeter to.do.some.testing?Also do you have auto climate control or manual one?

It's a manual climate control. I do not have multimeter. So is tht a fuze or just by a new blower motor

If it works on high the blower motor fuse and relay are good.Sounds like a bad blower resistor but without some.testing dont know for sure.You need a multi meter to do some testing.

if that is the case, what is the fix?

Again we need to test before we fix even if i was there i would have to do some testing with a multi meter before i replaced anything.Otherwise its just called guessing i dont like to guess.

awesome, well thanks. i'll work on this Multimeter thing

Alright let me know when you get one and we will start testing.

HARBOR FREIGHT HAS 'EM FOR $5 OR LESS

THIS ONE IN MY PIC CAME FROM AN AUTO PARTS STORE FOR LESS THAN $15

HERE'S ANOTHER

http://www.autozone.com/autozone/accessories/Innova-Hands-Free-digital-multimeter/_/N-26lr?itemIdentifier=64471&_requestid=1616301

THIS IS SOMETHING THAT CAN BE USED FOR ALL KINDS OF TESTING---YOU WILL NEED ONE IN THE FUTURE

https://www.2carpros.com/questions/2007-ford-taurus-tune-up

THE MEDIC