Solenoid should stay on when ignition is on, it is to keep engine from 'dieseling' when you shut off the engine. there is no vacuum involved in the circuit


57 3/4 ton rat
66 C-10 panel 350 200R4 3.07 axle
68 C-20 dump runner, 250 4spd, 4.11
82 Camaro, 305, THM-200-R4
84 Monte Carlo, 350, TH350
EVERETT, WA