In drive slips when you try to take off goes ok in reverse

no response so
so less
1:will it slip parked, idling, in drive,foot
on brake,? then advance throttle and see like 2000rpm but fails and goes why higher?
that is the stall test failing,
2:fail in reverse, parked?

fail only moving
gee,,,, can you say more than SLIP?

automatic trans or stick, we cant guess that ever.....
REVERSE OK!
drive, and Low dead. (hot and cold engine????)
so does it slip.?
slip means, you step on the gas and RPM races but car dont move. SLIPs. that is transmission
but of it dont slip that means the engine is weak..
if its slip?, check levels first.
if levels in box are ok (dont guess read how to )
then check shift linkage.
if that is ok, scan the PCM for tranny errors DTC.
if that is ok, do the FSM stated, line pressure tests..

(but all other gears ok?)
shoe drops.
so is park lock unlocking and you can get to N?
PRNDL.>

driver ok,
L ok
what?

or all is good, all gears and shifts perfect and drives perfect but
Reverse is like neutral,? slips
or is wrong gear, goes forward>
what?

How many miles on this transmission?

Perhaps it is in severe pain, because you failed to identify it it by make and model!

Servo or band worn out, o.ring gone hard or clutch pack burnt out.

its not reading the speedo signal properly, does you speedo wave about sometimes ?

Start with a complete flush of the trany and torque converter, and a filter replace. That should fix the problem, but the Taurus has a bad reputation for trany's going out frequently.

Hi there.Hope this can help.On the top of the transmission there's a black electrical plug that the shift linkage goes in..It sounds like the range sensor is out of adjustment..If you try going from reverse to like first or second does it still stall.You may have to get it adjusted.Does the selector in the car where it say P R N D 2 1 Line up with its indicator.

I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_a3369546f8067589

It sounds like the reverse clutch pack is bad, its slipping.