While field cult. this afternoon the engine temp light would come on and flash if I stopped it would quit.  As soon as I stop it goes off and resumes back to normal of the temp. range.  This only happens maybe once an hour, sometimes not at all.  Put in new water pump, new themostats, and the sensor next to the thermostats last fall to cure the problem, did I miss something or another sensor?  Could it be the tranny sensor?  Any ideas?   thanks