95 seville 4th slips then defaults into 2nd
 

I am getting frustrated . I put new solenoids in hoping that they would solve the problem. The trans seems to go into 4th but only under light acelleration will it stay in. It throws code 94 only. Sometimes first thing in the morn. it will light the check engine light and throw code 76 it will shift real hard, but if I turn it off and restart itlight goes off and its fine but still very little 4th. I can drive it in 3rd no issues. I am thinking maybe transaxle pressure control solenoid or PCM. Has anyone got any ideas?