Check the temp sensor on the thermostat goose neck. Mine got broken and when the truck warmed up it wouldn't start. Let it get cold and it would. about $25 at a parts store.
may be on top of the starter and replaced with same. Follow the + battery cable it will connect to the solenoid
The wire from the battery to solenoid is corroded & should be replaced.
if its a no start problem look under the battery tray- you will have to remove the battery and the tray and look at the wires off the solenoid there is a small red one that breaks off
solenoid is bad ,have it replaced,but check for remote solenoid first some vehicles have another solenoid mounted closer to battery
battery hooked up backward, wires crossed somewhere or it could be the solenoid.
Check for high resistance in the wiring to the solenoid, and in the battery cables. A weak battery can also cause this. If one battery is good, and the other is a little weak, the truck can turn over at normal speed, while the fuel solenoid doesn't move.
You should locate and test the solenoid. Most have three connections. There is a large cable from the battery to the solenoid, from the solenoid to the starter and from the start switch to the solenoid. The power terminals to the battery and the starter are large and have large cables. The starter switch connection is much smaller. Turning the key to 'start' provides a low current voltage to the solenoid causing the solenoid relay to close and power from the battery cable to connect through to the starter. If that voltage is present then the solenoid or the wiring between the solenoid and battery or solenoid and starter is suspect. If that voltage is missing then the starter switch or solenoid feed line may have failed.
check and replace rotor in ingnition distrib.and check spark modulator
Starter Ignition Neutral switch
Dead battery? Loose or dirty battery cables? Bad starter solenoid? Bad starter? Neutral switch?
Never disconnect a battery while an engine is running!
First I would check that all the wires are hooked up correctly. Next check the battery cables and the ignition fuse. Next I would check the solenoid. Good luck