so my brother in law has a 1990 integra ls and when the car has sat for the entire night and he drives it the next morning its reviving high before it wants to shift but only when the car is cold. Any thought on what this could be was thinking taht it was the speed sensor but unsure. Please give you input thanks

 

trans low on fluid, or have not change fluid for long time so it's thick, if fluid color is dark and thick, dont change it, just add more fluid, otherwise there's a chance that your car would not move

 

changed the fluid, still does the same thing

 

time for a rebuild......seals are cold and shrunken in the morning