98 oldsmobile intrigue starts and dies
 

It will start but will die. If I give it gas it will stay running and the fuel gauge will drop then go back up. It has the P1626 DTC, and before had some other codes but I can't remember what they were. Fuel pressure was at 50 psi and I replaced the crank sensor but nothing has changed. Any ideas?

DTC P1626 indicates that there is a theft deterrent system condition.