I have a 99 Ford Windstar that is intermitently starting and not starting. I have had the starter and cylenoid checked, no issue. I have recently on Monday replaced the positive connector on the battery and it started after being jumped (which before it did not do) so I let it run to charge the battery. After that it started a few times in a row then last night would not start so I replaced the battery. This morning it started a couple of times and now won't start. When it doesn't start it doesn't even turn over it there is just nothing. ANy advice before I bring it to the shop.