Hey, Well earlier in the week the upper radiator hose had a leak on my 1990 Lumina v6, so i replaced that. Took the car out for a run it was very slowly accelerating. Like if it was not switching into gears, as if it was just in neutral. I checked the transmission fluid it was good. Thanks for any input.

This is just a wild guess but I would say check the spark plug wires. It might not be firing on all cylinders due to the wires being bad.

Ill check that out. But the car runs fine in reverse.. Just when its in drive it does not go. It hardly even idles.

*bump*