May have been phisicaly a bad fit for the coil,amature and or contactor body springs.(magnetic feild is stong enough to pull in but the springs cannot open the contacts)I've had this in a certain make of starter before where the fix was simply to take it apart and reassemble.Maybe a back feed from a control device.I always manually actuate the the starter 5 or so times while de-energized to see if its sticky.Hold open the stop pb while checking the coil for power if power is there and the pb is open it's a back feed on the control circuit see how the holing contact is wired.They can also heat up while energized and stick closed.
[This message has been edited by frank (edited 09-01-2005).]
