Test it 1st, all you have to do with the car OFF, disconnent the single VTEC wire clip from the VTEC solenoid. feed 12V to the VTEC solenoid terminal that goes to the sloenoid inside the gray clip. If it is the soliniod it WILL NOT click on and off when you connect the 12V to it and take it off. If it clicks, start the car, And do the same thing(for a short sec) While the car is running(at idle) connect 12V to the actual single pin input(sloinoid side) again, the car should bog out or run shitty untill you disconnect the 12V feed.(its enguaging VTEC) If this is the case, there is something wrong with either your pressure switch or your wiring(harness)