A quick read of your situation leads me to believe your new starter is erratically defective.
If you have battery voltage at the large terminal and ignition terminal, it should start.
But wait! If you say you have 9.4v at both small terminals, this is not right. Because one small terminal should be grounded with a short ground strap there. Is the strap connected properly?
And also have you checked the ground strap from the engine to the chassis?
Get back to me with answers to all my questions and I'll be able to tell you more. Electric is my favorite.
There is the engine ground strap. Not the strap to the starter.
Last edited by Stinger9; 05-08-2014 at 05:40 PM.