Please Help!!! I Need My Car... :(

This is my first "import" car and it's been perfect up till now. I've been trying to fiddle with a bunch of stuff and I'm still at a loss.... Any imput would be GREATLY appreciated (or any links). Thanx in advance to anyone willing to give input.
(1988 2.2L 4 cylinder automatic)

Symptoms:
-Power loss in drive gear
-No overdrive
-Very slow acceleration
-plug in tester says alls fine.
-Tranny problem???

-Abnormal Slow acceleration. Its just my car to get me to work.

hate to break it to you.... 626s aren't fast cars, get used to the slow accelleration. Mines a 99' 2.sl0w with horrible accell

This almost sounds like the emergency brake is stuck on, as unlikely as that sounds. My 98 626 is quite peppy for a 6 cylinder. Unfortunately it is probably a tranny problem. The 626's are notorious for them - especially if the car has ever overheated.