Thanks for the reply, the AGM battery in it was bought 5 months ago. From my scan tool it’s over 12v with the headlights on and ignition on. But it’s always possible in these cars to have a low voltage problem.
I purchased a new valvetronic controller (computer) I’ll trickle charge the batter with it unhooked from the vehicle for 24hrs before replacing the module and releasing the valvetronic stops.