code help

pulled up codes 11,19,and 77 on a 90 SC.has a miss and sometimes shuts off while driving. usually restarts but the last time it cranked over slow. a local dealer said crank sensor,but that didn't fix it.any advice? thanks

codes

Sir, Try www.njtacc.com/tech/eec_codes.html

code 11 ---system OK
code 19 test condition O --failure in EEC internal voltage
code 19 test condition C --cylinder identification sensor failure
code 19 test condition R --- Erratic RPM signal at idle/too low
code 77 test condition R ---Operator error during dynamic response test/ wide
open throttle not sensed