Originally Posted by The SuperDookie Ranger
Sounds like altenator, Had it happen on my bro's old ranger...maybe
Check the alt and also check to make sure the battery can hold a charge. Could be that the alt was also going bad which would cause the batter not to charge and also could be the cause for the motor not to start. Start simple and then move on, but also if the coilpack went bad go ahead and replace the sparkplugs and wires. I learned that when any one of those go bad to replace it all.