Auto Shifting problem

in my 1991 3.0L Taurus a few days ago I floored the gas and the tranny held 1st past 60 kph (usually shifts at about 55) and thats when I let off the gas, so I have no idea when it would have actually shifted, I double checked and it was not in 1 it was in OD by the selecter on the dash (which works very well) has anyone else ever had this problem, it's not huge, I rarely ever floor my car, only once every few weeks to try to clean some of the carbon out of the motorany insightr on this will be much appricated

i believe '91s may still have a kickdown cable, check to make sure its tight if you do indeed have one.

but the car never kicked down, I hit the gas from a standstill, how does the cable work anyway? what affect would tightining have on shifting, would it make it more or less shift happy?

the cable goes from the Throttle Body to the transmission and when you floor the throttle, tells the transmission to drop down a gear