sounds like your tranny is junk. mine never threw a code, but sometimes it would rev up before going into 4th.
you have some options:
1.$1,800-2,200 for a rebuild, but they never seem to last.
2. 5sp swap $1,500-2,000
3. H22 auto swap $4,000
4. H22 w/ 5sp swap $5,000
5. get a junkyard tranny and pray it lasts till you can sell the car $800
6. buy a rebuilt tranny from howard engineering, i think it's about $2,200 alone for the tranny plus install. you have to give them your old tranny to rebuild.
I chose #4
:thumbup:

h: