97 ram trans problem when warms up ??

my truck stopped up shifting , so I changed govener soluniod and transducer + filter .

took it for a ride and drove fine till it warmed up ,stopped up shifting again
let sit ,shifted fine till it got warm ?

any ideas ? and my abs light is on

 

Camshaft posistion senor? and do you use ATF+4?

 

probably low fluid. get it hot and check the level idling in neutral.

 

+1 checking while in park, you get an inacurate reading. i noticed that (before i knew to check in neutral) when i checked it in park it was full. then found i have to check while in neutral, and found i was 2 1/2 quarts low. So Neutral is the way to get the reading

 

Change the speed sensor on the tailshaft.

 

thanks for your input I used atf +4
but what would cam sensor do ??
I will check fluid in nutral