Tow Rig Issues
Okay, so something really weird happened to me in the tow rig the other day. I noticed when coasting, the idle was a bit higher. It was around 775-825 RPM's, where it is usually around 625 RPM's. I also noticed the fan kicked on (loud howl/roar) and so I pulled into WalMart. There was a small cloud of smoke billowing out above the passenger side headlight. Opened it, it seemed to be coming from below the passenger side battery. I assumed that maybe it was the heater, as when I first turned it on that day I smelled something burnt. Turned the truck off. Restarted it with the heater off. No smoke. I also noticed the battery light kicked on for a second or two.
It hasn't happened since, but the idle is still high, and the fan roar is present as soon as I start the truck. And I don't know what's going on... No codes (except for the battery light, but it's now gone).