Strange auto transmission problem on 1989 Sentra (3-speed). Please help!

[dontbugme]

Hello,My baby recently started having some weird transmission problems:First thing i noticed was that it wouldnt roll back (by itself) when put in reverse gear - it requires pressing gas to about 1800-2000 rpm to start moving. Forward gears work perfectly fine. In reverse however, it feels exactly like as if handbrake is engaged - it moves if you give it enough gas, and stops quickly as soon as you let off.

Second thing that i noticed is that when engine is off, neutral gear works as it should, however when engine is running, putting it in neutral causes it to engage some sort of forward gear. Car will only accelerate to maybe 10-15mph with the shifter in "neutral". After that pressing gas just causes the rpms to go up without any effect on acceleration. If i switch from drive to neutral on high speed, it acts exactly as it should - rpm's drop and giving it gas just causes the rpm's to jump. Both of these problems occured at the same time, and transmission was working 100% perfect before.

Any help greatly appreciated!Thanks!

[Kageshin]

personally i would say that your transmission is slipping bad....get it check by a shop...might need to rebuild it