Vacuum Solenoid Valve
Remove vacuum solenoid valve. Connect vacuum hoses to valve. See Figure and Fig 1 . Blow air through valve from hose "A" and ensure air comes out valve air filter. Using jumper wires, apply battery voltage and ground to solenoid valve. See Fig 1 . Blow air through valve from hose "A" and ensure air comes out port "B". If results are not as specified, replace defective vacuum solenoid valve.