the sensors have a bad habit of going bad, getting dead spots, not reacting at all sometimes, my dads 99 been through 2 of them. sometimes coming from stop signs you could put the pedal to the floor a time or two with nothing, then it would come back on its own. the dealership will only sell you the whole pedal assembly for hundreds of dollars, napa has just the sensor dont have the part# right now.
is that a john deere A? '49?