Ticking Sound Under the Hood

The sound is not very pronounced after being started and at idle. It increases in volume when accelerating and then quiets down when rpm's drop in the upper gears. It sounds like it is coming from the driver's side top of the engine towards the back. It seems to have started right after the truck slowed down, seem to shake and rattle a bit from underneath, and then stalled out (which it never does) at a stop light. Several warnings came up on the dash "high transmission fluid temp", "low oil pressure", and a couple others that went away too quick to read. I let the truck sit for just a minute and I was able to restart it. The check engine light is not on and it threw no codes. I replaced the crankshaft position sensor, which it looks like that was a waste, because that what was recommended after doing a bit of research. Ideas?

 

Fuel pump ?

 

Sounds like it needs to go in for service.