1990 trans problem

I have a 1990 Plymouth voyager and I got two codes from it, 36 Fault immediatly after a shift, & 52 gear ratio error in second.. The CVI test reveiled that the 2-4 clutch was 80 (range 20 - 70) and all of the other clutches were in normal ranges.... I can not find any info on these and it's driving me crazy HELP!!!!!!!!!! This van is in great shape with a 130,372miles and I paid $300.00 for it & would like to get it fixed..