Yesterday afternoon after warming up (car still in park) the engine shut down was very rough. I heard a quick string of maybe 5 or 8 loud bangs under the hood. Sounds like something got loose and banging inside the engine compartment and ready to fall off at any moment. This morning it was just a bit rough but not nearly as scary. Other than that the car seems to work fine. Not sure if it is related to this gen 3 issue: Rough engine start - PriusChat Forums or this discussion on gen 2 but seems closed to new posts: http://priuschat.com/forums/local-prius-club-main-forum/37051-rough-engine-shut-down.html Any idea?
The occassional rough engine shutdown is normal on the Gen 2. There are many other threads on it. It sometimes almost sounds like dieseling (noise that overheating cars make upon shutdown). I highly doubt it's related to the screwy rough startup sounds on the Gen 3. The engine is different on the Gen 3 anyway.
