2004 Yamaha FZ6: hesitation when accelerating

5 of the 34 complaints about the 2004 Yamaha FZ6 describe hesitation when accelerating.

owner complaints: 5
of this car's complaints: 15%
typical mileage: 8,700
recalls: 0

Is there a fix? 1 service bulletin covers this area of the car. See below

What owners say

Filed Jun 13, 2006 · Acceleration · 8,000 miles · IL

(1) no unusual events. (2) throttle position sensor failed causing poor gas mileage, stalls, and hesitation. (3) replaced tps at a cost of $215.

Filed Jun 13, 2005 · Fuel system · 11,300 miles · VA

Engine hesitation, missing at highway speeds, engine shuts off with no throttle. This is a known issue with yamaha as tps failure on the fz6.

Filed Jun 12, 2005 · Fuel system · 9,600 miles · TX

I was returning home to plano, tx from a weekend trip to colorado. I was about an hour away from home, when I started to experience engine hesitation whenever I released and reapplied the throttle. The next day, the hesitation was gone, but I noticed that my fuel mileage had gone way down (formerly 42-45 mpg to the current 35 mpg). The engine is also running rich, enough that I can smell unburnt fuel in the exhaust. The engine also has started to idle erratically, fluctuating in rpms.

Filed Apr 30, 2005 · Acceleration · 4,400 miles · TX

1. Bike was badly hesitating starting off in 1st gear from a stop. 2. Turning the throttle to accelerate would sometimes pitch me forward on the start as the engine hesitated, then turning it a bit more would almost throw me off as it accelerated. 3. One dealership tried adjusting the throttle position sensor (tps) and it actually made the problem worse. The next dealership replaced the tps unit and it has been running fine since.

Filed Apr 18, 2005 · Fuel system · 8,700 miles · OK · 99 injuries

1-average usage, 2-motorcycles would stall sporadically, rpms would vary considerably, a lot of hesitation, variable idling, bad gas consumption. A failure of the motorcycle to cease throttle operations through mid-corner during a turn would inevitably cause the motorcycle and its rider to lose traction at the rear wheels. Further consequences would be death to the rider in extreme, but highly likely circumstances. 3-there was a defective throttle positioning sensor with the 2004-2005 yamaha fz6 motorcycles. Yamaha has so far failed to announce a recall of this defective equipment which can be very dangerous. Quite a few fz6 owners have noticed this failure so it obviously is not a 'one in a million' condition. Please help the fz6 community out by alleviating this worry. Thank you for your time.