recently my alternator went bad. I have since replaced it along with the battery and serpentine belts, and tensioned everything. before this i have replaced the spark plugs, and verified that my fuel pump works. I have also replaced my mass air flow sensor and checked the throttle body. the car refuses to turn over. all power comes on as normal, but it just won't turn over. i replaced the starter just to be sure. no changes. the car started just fine until the alternator went bad, so I have hit a wall and am at a complete loss. I have a 1985 p type with a 5mge.