Ford Aerostar Starter Solenoid

I Installed New Uppper Solenoid And New Starter. Hook It Up And The Starter Stayed Engaged. I Turned It Off Now I'm Not Sure What To Check...

I Am Having Problems Getting My Van To Start. It Tries To Turn Over But Just Can Quite Seem To Get There. We Have Checked The Battery...

Electrical Problem 1990 Ford Aerostar 6 Cyl Two Wheel Drive Automatic I Replaced Solenoid. New One Has 4 Post Old Had 3 Post. Now...