#Team Valvoline , oohhh boy removing the positive wire from the battery could have been a hot job touching ground at the time.... made my day folks. Maybe UTI : - ) want be a bad choice, wrenching all in all is a learning curve Zack.... No one came from above and was a master wrencher but you need talent, to left hands is a strike.
Nothing spins in CIS beside the fuel pump. Most Problems are clogged channels in fuel distributor due to rust. ( iron or alloy block with hoses output). The piston inside moves up and down can get stuck on its way. Other thing on cars with Lamba Control have a some kind of TPS (black box on the side of the air flap the moves the piston inside the fuel distributor) this part do a feedback to the ECU. If this part fail then the motor can stop in idle because of the idle air bypass valve shuts down the engine by make it to rich or lean (most to lean). The idle air bypass valve is also a common part that fails after years.
If you check the basics non stuck piston/clogged channels ... fuel pressure from the pump. Good spark at all cylinders you got half the work done and in most cases the car runs. And if you have the K Jetronic with the warm regulator also this one fails after year such as the pressure regulator on the KE version.
If you have the KE Jetronic ECU in the size of two smart phones unplug it ... have a drive.... no difference there then the ECU or power supply failed.