The CSV on the intake manifold is the intake 'manifold doodad'. You say you have 'transplant' 280SE motor. Probably a 99% chance the CSV, the start solenoid on the FI pump, temp s/w, timing s/w, 2nd solenoid on FI pump(if there), polution stuff, etc are wired uniquely. Run a contact 'jumper' (12 volts) s/w to the CSV on the manifold. Hit it for a second or two on Start. Bump it enough to keep it running til it warms up. If this works, then fix the starving problem.