I have a 98 Civic Ex.

A while back the engine light would go on and off. Stupid, I had the code
read but never did anythig about it.

A short time later I noticed that the tachometer start to fluctuate (move
back and forth) between rpms but the engine doesn't rev and the cars
performance doesn't change. This usually happens when I am accelerating,
between 3rd and 4th gears. But like I said, the engine wouldn't rev and the
car would jump or move.  

During this last week, whenever I am at a stop and the car is idling or if I
am driving slow, as was the case this morning, the car may stall out. This
morning took me several tries to get it restarted.
I am reluctant to have some one look at it because I recently moved and don't
have a mechanic yet.

I am not exactly sure what the deal is but I am certain all this events are
related. Has anyone had a similar experience?

Thanks.