So I recently picked my first Mustang at a public auction. However I can't get it started. It needed a new Ignition lock cylinder, simple enough. Got that done but now when I try to turn it on it cranks and almost starts but I can't get it to start fully. What could be the issue? Could it have had an alarm and that's why I can't get it to stay on? Oh Almost forgot It's a 1995 Mustang GT 5.0 Convertible with a 5 speed.