87 L98 stalls when backing up a steep driveway
 

Since I moved to Georgia from NY.. we now live in a house with a steep driveway that has a downward slope. Since I lowered the car I can only go forward into the driveway down the slope. Now when I back up.. I notice the car doesn't like backing up the slope. It keeps wanting to stall and die if I go up slowly. I have to give it serious gas to prevent it from doing that. Is there a reason it is doing this?

Fuel starvation?

I thought that too but it had plenty of gas.

could be a small pressure leak, or low end power fuel pump...or the position of the fuel sock in the tank

Manual or Auto?

auto