I have Ford Taurus 1992, facing problem gear lever too much play, when we put D some time automatically gone to N , vechile running D some time, gear will not change to 2nd gear. then we make manually 2 or 1 then automatically it will correct, Our local Technician he told me to change first shifting cable, after will see. I would like to get your opinion first,

SOURCE: Gear shift won't shift.

make sure the brake lights are working the shift interlock works off the brake light switch.

SOURCE: 1997 Ford Taurus, Won't Shift Past 3rd Gear

The forward clutch control valve has a retaining clip that is known to break on these tranny's. This can prevent it from shifting into 4th gear. Good news, the part is five bucks. Bad news, it's in the valve body which takes a few hours to get to. I fixed mine in about 8 hours thanks to great step by step instuctions I found online. Search for "valve body removal taurus tranny". If it's not the retainer clip then it could be one of the solenoids on the valve body. I believe there's one just for 3rd and 4th gear. Good luck

SOURCE: Ford Escape Automatic Only Goes Into 1st Gear Manually

it sound like you have a vacum leak or your shifter cable may need adjusted

SOURCE: 1997 ford taurus starting problem

There are a few things to look at, one would be the ground wire, if this is tight and I assume it is by your posting, the next thing to do is place the vehicle in neutral and attempt to start the car. If it starts, that is the neutral safety switch. The vehicle should start with no problem after that. If not, please let me know and I will help you further.

SOURCE: 1995 ford taurus no speedometer, abs light, won't shift correctly

speed sensor needs replaced