Once engine was warmed up, vehicle stalled at stoplights twice and once when starting to move after a stop (when in an intersection). Other times when stopped. Idle speed dropped below 1400, under which it stalls, and it was difficult to rev the engine to prevent stalling since there is no neutral gear, so revving more than slightly can make the vehicle move.
The worst 2005 Yamaha YP400 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Engine4
- Electrical2
Specific symptoms reported on the 2005 Yamaha YP400
Recalls 2
Fuel system, gasoline: delivery: fuel pump
- What is wrong
- Yamaha is recalling 9,600 my 2006-2007 cp250 and my 2005-2007 yp400 motorcycles. The engine could stall and be difficult to restart because the wire terminals in the fuel pump wire coupler have corroded. Water can enter from the main wire harness end and run through the harness to the fuel pump coupler.
- Risk
- If the water remains in the coupler for an extended period of time, the terminals can become corroded, which can prevent the fuel pump from operating properly. If this corrosion affects fuel pump operation while the scooter is being ridden, there could be a crash resulting in injury or death.
- Remedy
- Dealers will install a sub-harness which is designed to allow any water between the wire harness and the fuel pump to drain out before it reaches the fuel pump. The dealer will also inspect the connectors. If either the main wire harness connector or the fuel pump connectors is already corroded, the corresponding assembly(ies) will also be replaced. The recall began on may 9, 2008. Owners may contact yamaha at 1‑800‑962‑7926.
Recall number 08V180000 · Recall details
Fuel system, gasoline: delivery: fuel pump
- What is wrong
- On certain motorcycles, a leak at the fuel pump seal may allow fuel leakage.
- Risk
- Fuel leakage, in the presence of an ignition source, could result in a fire.
- Remedy
- Dealers will replace the fuel pump seal free of charge. The recall began on june 18, 2007. Owners may contact yamaha at 1‑800‑962‑7926.
Recall number 07V219000 · Recall details
See all 2 recalls for the 2005 Yamaha YP400
Defect investigations
Motorscooter stalling
Odi opened this pe based on owner and ewr field reports alleging the subject scooters would stall while underway.after opening this investigation, yamaha decided to conduct a corrective safety recall (08v‑180) in lieu of responding an odi information request.with that recall, this pe is closed.
PE08018
Technical service bulletins for the 2005 Yamaha YP400 1
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
What 2005 Yamaha YP400 owners say
Most recent owner complaints, unedited.
Engine stalling while moving.
Engine stalls in traffic.
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.
Vehicle stalls when attempting to accelerate normally (typically stalls in intersection). Not frequent. Vehicle restarts normally. Occurs when engine is fully warmed up.
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 almost got seriously injured or lost my life yesterday due to this issue. Sincerely, thomas
Compare the 2005 Yamaha YP400
Other model years
Questions about the 2005 Yamaha YP400
Is the 2005 Yamaha YP400 reliable?
Owners have filed 6 complaints about the 2005 Yamaha YP400, 3.0 times a typical YP400 model year.
What is the most common problem with the 2005 Yamaha YP400?
Engine and cooling, with 4 complaints. Next is electrical (2).
How many recalls does the 2005 Yamaha YP400 have?
2 recalls, covering fuel system, gasoline.
VIN decoder
See the problems and recalls for an exact car
Buying a used 2005 Yamaha YP400?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history