Hi all, my buddy's 1kz 1994 Surf is having some trans issues. It is hesitant to upshift, usually dragging up to 3k rpm before going into 2nd or 3rd, then it wont go into 4th at all. We've swapped the temperature sensor and all 3 shift solenoids and obviously checked the level 1000000 times. Not sure where to go from here and supposed to leave for a 1600km roadtrip with both our rigs in 36 hours. Any tips or things to check would be much appreciated. We are planning to check the throttle body TPS and the speed sensor next, but not optimistic about those. Cheers!