it should kick the wheel out of your hands somewhat.
is the steering erratic at all? like does it snap from left to right or anything weird like that on the track selection?
someone else had a thread about their steering pot being bad and doing that, and I told them to replace it, if the pot's messed up it'll mess with the force feedback, however, it should make it super strong and nearly break your wrists, not be dead. lol
I don't know anything about the voltages going to the feedback motor anymore, I don't know what kind of voltage it calls for, you can start by checking all your connections to everything in there though.
I know with ours, which was like the WORST game ever when we got it that half the shit was unplugged inside it, the monitor chassis had cold solder up the ass, the steering pot debacle, etc. and after getting that all worked out the game's been fine since.
do you know how to check power supply voltage by chance? it's one of those games from an era where a lot of things are starting to go bad now...