Depending where the loose connection is i.e. battery cable, stater feed, solenoid, ignition switch etc.
Dirty or loose connections or a bad starter.
Stop or slow down? It sounds like a loose/worn suspension.
check for loose connections
Pulley stop truck from starting
Arcing. The electrical current jumps across the air gap in the loose connection. This creates heat. .
Yes.
Loose or worn belt?
The car will stop if the battery cable comes loose.
You have a loose electrical connection.
bad battery, and bad alternator not keeping it charged - also bad connections to the battery or loose wire connections on the alternator.
Thee fan belt is loose or dried out. Most likely loose.
A loose earth/ground wire can prevent any of the electrical components from functioning.A loose earth/ground wire can prevent any of the electrical components from functioning.