why would car run a half hour then stall on 1991 Buick Skylark

runs fine awhile then it just stalls have to let it set about 15 minutes then it will run fine for a few then stall again

by in Richford, NY on May 13, 2013
2 answers
ANSWER by on May 13, 2013
My guess is a defective crankshaft sensor.
ANSWER by on May 14, 2013
number #1 is correct, does the vehicle fire back up immeditly or do you have to let cool