Flat battery, neutral safety switch, starter realy poor battery connections.
Yes. Without sufficient charge, the starter will not have enough amperage to crank.
Usually, the engine flywheel. A solenoid in the starter moves the starter pinion shaft forward (or backward depending on how it is mounted to the engine) to engage the outside edge of the flywheel (which has teeth to match the pinion gear).
does the motor spin..ie..crank? if no possible locked up engine..try spinning it by hand..correct size socket on front crank bolt turning clockwise.. possible bad starter motor does the starter engage when the key is in the crank possition. if the motor does crank your looking at a fuel or ignition problem
if it bolts on the starter assembly you are probably talking about the starter solenoid. basically its what makes the starter engage. if its a sensor that just bolts near the starter it could be anything from a crank position sensor to a knock sensor.
The small purple wire on the "S" terminal of an older GM vehicle starter would lead to the ignition switch. With the key in the start (crank) position, the purple wire signals the starter solenoid to engage the starter.
Have an experienced mechanic listen to the starter as you engage it and crank the engine over. He can tell if the starter is to tight, to loose or just right. There is a process to measure the correct spacing between the starter drive and the flywheel. Not easily done by a non-mechanic.
Usually when a starter solenoid/relay switch is bad, you will hear only a click and the starter will not spin (crank).
the starter solenoid is on the starter the starter relay is mounted on the drivers side of the top front main support in font of the battery
That's insufficient information. In general, "crank over" means that the starter is not turning the engine when you put the keyswitch to the "start" position. The starter can fail to engage because of a failed starter, solenoid, keyswitch, neutral lockout switch, faulty battery, failed alternator or just about anything that would drain the battery.
more than likely in steering column
On a 1992 Ford E150 van, the starter is typically located on the passenger side of the engine, near the bottom of the engine block. It is mounted to the transmission bell housing and can be accessed from underneath the vehicle. Make sure to disconnect the battery before attempting to service or replace the starter.
your battery is dead or the starter solenoid