So my truck stalled about 3-4 months ago while i was rolling and when i sent it to the shop to have it checked out it started when the guy inspected it. So today it stalled again when i was idling in a parking. After trying to start it for a while with no luck I called up my mechanic and asked for some advice on what to do since i didnt wana have it towed. He told em to shake it as a joke and i tried it out and it STARTED perfectly?! LOL i lost a 5$ bet with my buddy that it wouldnt start. What could be lose that could be causing it to stall?

 

coil wire shorting?

 

A loose fuse or relay, battery cables, starter cable......something loose/making a bad connection.