The cav starter is not a standard ford unit. Mine failed on me and I took it to a rebuild shop. The guy tried to identify both the starter and starter solenoid. He was able to identify the solenoid, which was the problem, and replace it. You probably got water into the starter from driving the car in the rain. I have been told that because there is no inspection cover on the flywheel, water can get into the bell housing and enter the starter and solenoid. The way to cure the problem is to fab a flywheel inspection cover to keep water out in the first place. If I recall, I think the solenoid is the same as on a jeep wrangler.