How do you tell if your stall converter is good?

Answer 1

The bext/cheapest way I know of is to drive your car onto a fairly steep incline and see if the transmission can hold the car in place. For example, drive up a hill, come to a stop, and let off the brake. the stall converter should have enough grab to at least stop the car from rolling backwards. If you roll down the hill backwards as if it was in neutral your converter is bad.