Thanks, I appreciate that. I saw that before, but was hesitant about buying it for that price. I had read a post about it, and the fellow who bought it said it was a gross waste of money. He said it didn't have much information in it to justify the cost.
It was working after you took it apart. So I think the problem is with either the new solenoid. Or there's something going on with the starter. Possibly related to the recent disassembling. Probably not, since it was working.
So I'd check voltage again, then put the old solenoid back on it, for testing purposes. Check operation again, see if it made a difference.
But if everything else checks out, I'd take it apart again. Or replace it.
Yeah that's about what I'd expect. If putting the old solenoid on it doesn't cause a change. You might have to take the starter apart.
Assuming that you have good voltage at the starter. I'd say that your problem is between these two things.
That could be caused by several things. I'd put the old solenoid back on it, and see how it does.
That's the easiest choice, because otherwise it's likely the starter. Or whatever passes for a bendix in the starter you have.
Make sure your battery has a full charge. On rare occasions I've had car starters do that when the battery was weak. Of course there were probably other factors involved too.