2004 Yamaha YZFR1: sudden loss of power

5 of the 37 complaints about the 2004 Yamaha YZFR1 describe sudden loss of power.

owner complaints: 5
of this car's complaints: 14%
typical mileage: 7,000
recalls: 0

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

Sudden loss of power by model year

2008
1
2007
6
2006
1
2004
5

What owners say

Filed Mar 22, 2009 · Acceleration, Tires · 10,000 miles · CA

Low speed, low RPM power loss. Total engine power loss (engine dies). Suspected tps failure. Took motorcycle to dealer ship for repair. Problem still exists. Took a second time to dealer, did not replace tps, said it checked out ok. I understand there is a 3rd generation tps that can be used.

Filed Jul 6, 2006 · Electrical · 7,865 miles · CA

On february of 2004 I purchased a brand new 2004 yamaha yzf-r1 from an authorized yamaha dealer in covina, ca. Recently, I was riding the above-mentioned motorcycle on a rural highway when suddenly and without warning stalled. The bike lost all power and the rear tire locked up sending the bike into a rear wheel skid, I was able to pull the clutch in and recover control of the bike. I pulled along side of the road and tried to regain my composure as I had almost crashed. I decided to checked the bike over, I looked for obvious lose wires or connections and found none. I checked the gas level and I had over half a tank of fuel remaining. I tried calling my local dealership but there was no cell phone signal in that particular area. Having no other recourse, I reluctantly decided to ride the motorcycle home. On the way home the motorcycle stalled two more times in less than a 15-mile distance. Thankfully I was able to adjust my riding to compensate for the stalling. A few days later I loaded the motorcycle in the back of my pick-up truck and took it to a local yamaha dealership. I described the problem to the lead mechanic whom seemed perplexed by my description of the problem. I told the mechanic that I was a member of an online forum, www.r1-forum.com, and that I had read of other yamaha r1 owners with similar problems. He agreed to take a look at the problem. The mechanic gave the bike a cursory look and determined that there was nothing wrong that he could determine. I explained to the mechanic that other members of the forum had crashed because of similar problems and that I was concerned. I pleaded with him to call yamaha motor corp. To see if anyone else had similar problems or if they had issued a safety warning or anything similar. I have not heard anything back from the dealer and I have tried to contact them several times about this issue.

Filed May 16, 2006 · Electrical · 7,000 miles · KS

I had my 2004 yamaha r1 repeatedly lose power while operating in the sub-7000 RPM range. The motorcycle would backfire, sputter, and then lose power. The failure first appeared with approximately 7000 miles on the odometer. The failure was corrected by removing the throttle position sensors and cleaning them with contact cleaner. The cleaning was done approximately 2500 miles ago and the failure has not reappeared.

Filed Jan 6, 2006 · Acceleration · 5,020 miles · CA

I was going to watch the game in pasadena last night doing about 75 MPH on the fastlane of the 134 fwy. All of a sudden I lose all power,(it was like someone hit my cut off switch on my right handle bar) lucky for me I was able to make it all the way to the right shoulder, scary. I turned the key off, then on and restarted, no problem. Im hearing from a lot of people that it is the tps sensors: http://www.r1-forum.com/forums/showthread.php?s=&threadid=98831&perpage=20&pagenumber=1 http://www.ronayers.com/fiche/501_2451/intake_2/intake_2.cfm?man=ya&groupid=32040&parent=31910.

Filed Jan 10, 2005 · Fuel system · 100 miles · IL · crash · 1 injury

My son was riding a 2004 yamaha yz250f motocross motorcycle on 1/7/05 when on his approach to a jump his motor quit running. The carburetor popped out of its mounting [intake boot]. The consequence was that as my son was committed to clearing the jump. The yamaha lost power, and he crashed into the face of the landing hill. And broke his collarbone on impact. After I made several inquiries I was surprised to learn that this is a common problem with this make and model of motorcycle since it introduction in 2001. When I called yamaha customer relations I was told that there wasn't a problem. My son broke his collar bone,,what if it was his neck or worse.there should send a letter to everyone who bought a yamaha yz250f and see how many times this has happaned and what the resulting injuries were. Thank you.