RE: lightning bolt flashing truck at idle?? 2003 quad cab ram 5.7 lt.
I had a similar indication happen in my O6 5.7 - the manual said it was a warning sign for the Electronic Throttle Control system. A steadily illuminated light indicates a problem, but its still driveable. A flashing light requires attention ASAP.
Mine started flashing as it was idling, and the idle was jerky and rough. When I drove away, there was no throttle response at all - I just idled out. I managed to get back home (obviously hadn't gone far), then shut the engine off and restarted it, and it was fine. There have been no problems since. I was going to start a thread to see if this was a problem out in Hemi land.