my car wont go into 4rth is been doin this for like 2 days, and it wont go into 4rth.

my car has 100k engine runs strong great!, shes a TA 1994 GT V8 5.7.

2 days ago i noticed that my car woudl be doin 60-80 mph and it just wont go into 4rth, is my trany gone or is it just a PCM thing or speed sensor problem?

 

Sounds like a part in the tranny is shot, I would take it to a reputable shop and have them look at it, PS my stock trany will be up for sale soon... Rebuilt last year

 

Could be a sensor, solenoid, or other piece of tranny hardware.

The smoke makes it sound like a piece of tranny hardware.

How does the fluid look?

Mike