2009 Yamaha Zuma 125: engine stalls while driving

Filed Jul 18, 2013 · Fuel system · 3,245 miles · MA

In hot weather (greater that 90 degrees) engine stalls and cannot be restarted until engine cools for an hour. Stalled at red light in four lane highway. Needed to push to side of road. Very dangerous. Stalled again next day same situation. Runs fine at night when cool.

Filed Dec 3, 2012 · Fuel system · 5,063 miles · FL

Being that there has been issues and complaints filed with the 2009 yamaha zuma 125cc fuel pumps, the problem is the fuel pumps are defective and causes a hazard in traffic ,stalling of the scooter while driving .this creates a problem at hi speeds and also happens when you shut the bike down after a ride. After this happens the fuel pump will not pump fuel to re start the bike,which leave the driver stranded ,the bike will restart ,after the bike has cooled down for 3 to 4 hrs. And sometimes longer heat might be causing the faulty pump to fail when driving . Bad design . Yamaha is well aware of this issue ,but no recalls . What is it going to take to get a mandatory recall on all 2009 125cc scooters, I would hate for someone to run into me because of my bike stalling in traffic. It is a matter of time before someone gets hurt or killed due to this issue. On 12/21/12 I was driving down us41 at 50mph. When in the middle of traffic rush hour ,traffic all around me .at this point my bikes fuel pump cuts out ,then the scooter slowed down real quick,almost like putting on the brakes . Now being in the left lane I have nowhere to go. I almost got rear ended by the car that was in the same lane as I was ,good thing he was paying attention .

Filed Jul 22, 2012 · Fuel system · 6,200 miles · GA

When it is hot, my yamaha zuma 125 will stall at a traffic light and will not restart. Waiting and trying again seems to be the only solution available. The wait time is unpredictable, 15 minutes to 2 hours. Suspecting it is related to heat I try to wait in shade. The problem first manifested more than a year ago, and is happening again with increasing frequency. This summer is hotter than last. I have noticed recently the usual hum w/clicking sound that happens when the key is switched on is not happening when there is a problem. I believe that is the fuel pump spinning up to pressure. I believe my fuel pump is unreliable under these driving conditions.

Filed Aug 29, 2011 · Fuel system · CA

In warm weather fuel pump fails causing vehicle to stall.

Filed Aug 20, 2010 · Fuel system · 700 miles · IA

Tl*the contact owns a 2009 yamaha zuma. While driving approximately 40 MPH, the vehicle suddenly stalled without warning. The contact assumed that the failure was caused by the fuel pump. The vehicle failed to restart. The dealer advised that the repair part was on back order. The vehicle was neither diagnosed nor repaired. The current and failure mileage was approximately 700.