No Stop

[AREA 91]

I can't get my 90 SHO to shut off with the key! Starts and runs great, just won't shut off! I have tried several things so far, including:

CCRM
computer
alternator
starter solenoid
ignition switch

Still a no go! Any suguestions???

 

[Foxwulfe]

I know you know what you are doing, but..

Did you replace the ignition switch and the lock cylinder?
Could there be a chaiffed wire coming from the igniton switch to the ECM?
A stuck relay or bad solid state switch?
Did you mean IRCM, instead of CCRM? (I can not recall if that is the same thing)