An04Prius said:
Mark Prius said:
Mark's suggestion may be possibilty if you tend to regularly let gas tank go below 1/4 tank before re-filling. Some sediment & /or water from condensation can accumulate in gas tank, and get into fuel system, more likely if you drain tank frequently.
Take it out on freeway for a stretch if you dont normally drive at those speeds.
<scratching head> The fuel line sucks from the bottom of the fuel tank. The bladder is there to prevent vapor from forming (so no condensation).
More likely would be a higher octane fuel. (The listing on the pump is the minimum octane that can be dispensed from that pump, so all flavors at a pump could be the same 93 octane...) Higher octane in the Prius' engine is known to cause an engine misfire, and also gives lowered MPG (since there's less energy content in the fuel).
I'd like to know more about the road and weather conditions, and what SSCs have been done to the 2004.
If accelerating and there's loose gravel/sand/grass under the tires or you bounce on a pothole/manhole cover, you could experience "hesitation" because of the traction control/ABS notices a tire "slipping" and reduces power to the other wheels.
If it was raining (or you just came from a carwash) and you haven't had the 40E weatherstripping done, water could've gotten into the engine and caused some sputtering, but then again some dash lights would've come on.
or it could be the mysterious "stalling" issue at its beginnings, fixed by 40D and the followup TSBs, but then you'd probably get some lights on your dash...