Yamaha YP400 engine problems
11 complaint narratives mention engine terms.
Key facts
13 owner complaints analyzed
2 distinct recall campaigns
4,000 mi median reported failure mileage
Scope: 2005 to 2012 model years. Data snapshot: . 13 complaints include usable failure mileage.
Engine operation evidence
11 of 13 complaints match this topic (84.6%). The keyword filter can include complaints that mention a transmission without reporting its failure. View matching rules.
Owner report 10201010 · 2007-08-28 (August 28, 2007)
2005 YAMAHA MAJESTY 400CC SCOOTER STALLING IN TRAFFIC. ENGINE WAS WARM, COMING TO A STOP. ENGINE STALLED AROUND 5-10MPH. THIS IS THE 5TH TIME SINCE NEW. CONDITION VERY SERIOUS, AS I WAS ALMOST RUN OVER BY TRAFFIC DUE TO SUDDEN LOSS OF POWER/DRIVE. THIS IS A LAWSUIT FOR SURE. ON A VERY SMALL YAMAHA SCOOTER FORUM, THERE ARE ALREADY 38 OTHER RIDERS WITH THIS EXACT SAME SCOOTER THAT HAS STALLED AT LEAST ONCE. HTTP://MAJESTYUSA.COM/FORUMS/VIEWTOPIC.PHP?T=486&POSTDAYS=0&POSTORDER=ASC&START=0. THIS IS A VERY SERIOUS COMPLAINT I'M FILING. I AL…
Owner-reported narrative. 12,100 miles reported. Look up ODI 10201010 at NHTSA ↗
Owner report 10223529 · 2008-04-07 (April 7, 2008)
VEHICLE STALLS WHEN ATTEMPTING TO ACCELERATE NORMALLY (TYPICALLY STALLS IN INTERSECTION). NOT FREQUENT. VEHICLE RESTARTS NORMALLY. OCCURS WHEN ENGINE IS FULLY WARMED UP. *TR
Owner-reported narrative. 3,000 miles reported. Look up ODI 10223529 at NHTSA ↗
Owner report 10224148 · 2008-04-10 (April 10, 2008)
I HAD A NEW 2005 MAJESTY (YAMAHA) SCOOTER. IT WOULD ON OCCASION STALL. I HAD IT TWICE STALL WHILE MERGING ONTO THE FREEWAY. THIS ALMOST RESULTED IN A CRASH, BUT I WAS ABLE TO GET TO THE SHOULDER AND RESTART THE ENGINE. THE DEALER REPLACED THE ECU AND I HAVE NOT ANY PROBLEMS SINCE. *TR
Owner-reported narrative. 320 miles reported. Look up ODI 10224148 at NHTSA ↗
Owner report 10226991 · 2008-05-08 (May 8, 2008)
ENGINE STALLS IN TRAFFIC. *TR
Owner-reported narrative. 14,450 miles reported. Look up ODI 10226991 at NHTSA ↗
Owner report 10327595 · 2010-04-26 (April 26, 2010)
ENGINE STALLING WHILE MOVING. *TR
Owner-reported narrative. 4,500 miles reported. Look up ODI 10327595 at NHTSA ↗