So I've been encountering this weird problem, or maybe i am just going crazy. Sometimes the car would just shut off, rpms drop, lights go dim; headlights and interior lights. Not quite sure if this even happens, as it only does it for a split second and everything is normal again. People have been in the car with me, and I would.ask "did you just see that!?" And they would not notice it.

I've checked the battery terminal, spark plugs, fuel rail, ignition.

I am at a lost here.
Is my car haunted?

 

I had a problem kind of similar... my positive cable had corroded and would sometimes loose power connection and left me stuck at a gas station one time. Luckily I was able to swap my stereo power wire to get home.

 

I had the same issue. When coming to a stop and pushing the clutch in my rpm's would drop below 800 to about 350 and shoot back up and my headlights, interior lights, etc. would dim and sometimes the car would shut down. After cleaning the IACV it all went away. Have you cleaned it before?

 

Check all your grounds and electrical connections around the battery.