RS Warrior Forum banner

1 - 20 of 20 Posts

·
Registered
Joined
·
4 Posts
Discussion Starter · #1 ·
Hey, been lurking around this forum for a while, hopefully I can get a few ideas.

I have a 2005 Warrior, bought it a couple months ago used from a dealership with about 22,000 miles on it. Everything is great, with one exception. When I am riding on the highway around 70-80 mph, occasionally the motor will just cut out for a couple seconds. It doesn't die, it just starts slowing the bike drastically. After a second or two, it jumps back on, and away I go. I can't seem to figure out any pattern, except it only seems to to it when warmed up, never when I first take off or at night. I took it to the dealership, but they couldn't duplicate the problem, and I would prefer to fix it on my own anyway. Any ideas out there? It's driving me nuts, and nothing is scarier than losing throttle on the freeway in front of a semi.
 

·
Registered
Joined
·
8,318 Posts
Have your dealer run the serial # & see if the recalls have been completed for--------


Crank position sensor = CPS


Throttle position sensor = TPS
 

·
Registered
Joined
·
3,899 Posts
+3 on CPS... does this occur when you roll on the throttle at about 3000 rpm? Even if the recall on the CPS is done, it doesn't mean it has been done correctly or has not gone bad and require a new CPS....
 

·
Registered
Joined
·
4 Posts
Discussion Starter · #6 ·
mdfd, yeah, it does happen around that rpm when i roll on. Has this happened to you? How difficult is a cps replacement?
 

·
Registered
Joined
·
3,899 Posts
sounds alot like a CPS gone bad then...

The replacement procedure is not too difficult, just messy. There is a CPS replacement kit that is for sale at the dealership. It includes the new and improved CPS, new bolts, and a new gasket for something like $35 or in that neighborhood.

Both AlanH and I have documented the process. I know I have posted pics of each step as well. Let me see if I can find it....
 

·
Registered
Joined
·
780 Posts
Before you crack open the engine to do a CPS, remove your battery and make sure there are no wires pinch under it. I had several wires pinched and frayed under my battery causing my bike to stall. I have heard of one other person having this happen. I don't think it is really likely, and more likely it is the CPS, but it's free to check and fix.
 

·
Registered
Joined
·
3,899 Posts
Dragstar said:
Before you crack open the engine to do a CPS, remove your battery and make sure there are no wires pinch under it. I had several wires pinched and frayed under my battery causing my bike to stall. I have heard of one other person having this happen. I don't think it is really likely, and more likely it is the CPS, but it's free to check and fix.
always good advice..... (even though you're not really opening up the engine
)
 

·
Registered
Joined
·
3,923 Posts
It reminds me of bad gas. Like it just completely shutsdown like no fuel and as you coast in a panic it suddenly rips to life.

Another could be CPS issue but I didnt think that the '05 was in the recall but I would have to go with bad gas (water) first.
 

·
Registered
Joined
·
1,713 Posts
mine cuts out again. had it fixed but yamaha insisted of swapping the CPS again and now i have the same old trouble :-(

stay tuned as I will post my ongoing conversation with yamaha germany
 

·
Premium Member
Joined
·
8,921 Posts
elijiaht said:
I just got off the phone with the dealership, all the recalls have been done. Any other ideas?
Yes, i would verify that the CPS was replaced by inspecting the rubber grommet for the WHITE ID MARK that exists at the rear side of the clutch case as shown here: http://farm3.static.flickr.com/2159/2097217706_981d525244_o.jpgor http://farm4.static.flickr.com/3220/2958377641_df390b716b_o.jpg


Verify that the Dealer/installer of the new CPSpartdidn't splice the exiting wires to save labor. There are other components as well as an intermittent loose or grounded wire that can cause this type of failure.


A couple ofmembers have replaced the LAS (Lean Angle Sensor) after replacing several CPS assemblies with similar symtoms of a failing CPS



IMO, there's no magic wand for this intermittent problem if a new CPS recall part was properly installed. In my particular case the failure was obvious as the black wire to the sensor was boken when i opened the case.


Reference: AkitaDog - Mon, Oct 20 2008 1:52 PM
http://rswarrior.com/forums/p/121319/973289.aspx#973289
 

·
Premium Member
Joined
·
1,549 Posts
My '05 was doing this exact thing and I had the CPS replaced twice on mine and it was a different type of engine cut out. The CPS had a definate rpm point that would react and cause the engine to run crappy.

With the LAS it was very intermittent that I could go a day or two without it acting up. And itw ould only happen when cruising down the freeway at around 80 MPH.

With hearing of this problem with another forum member I removed my LAS and opened it up and taped the swing weight so it would stay in the middle postion over the sensor on the circuit board. Well I'm conviced this was the problem, I have not had the engine shut down due the fule supply getting cut off.



I'm currently having my local dealer check to see if this switch falls under the warranty and get a replacement.
 

·
Registered
Joined
·
4 Posts
Discussion Starter · #16 ·
Thanks for the help, guys. Seems like the cps sensor most likely the problem, I'll take a look at it this week.

btw, what are the symptoms of a broken LAS? I've never had a bike with this many electronics on it before...
 

·
Premium Member
Joined
·
1,549 Posts
In my case it would shut off the fuel supply off to the engine when cruising down the freeway at 80mph. It would shut down for about 3-4 seconds.

I would go a few days sometime between it happening as opposed to when my CPS went out I could not get above 70mph at anytime.
 

·
Registered
Joined
·
718 Posts
I just went through this there is a module that controles the fuel pump under the seat there is a brown wire that runs from it to the fuse box. The brown wire had coroded almost in half. I pulled thepin cleaned up the wire and resoldered it to the pin and put the harness back in the module and wala it runs just fine. if you need pics give me a hollar.
 

·
Premium Member
Joined
·
8,921 Posts
knyland said:
I just went through this there is a module that controles the fuel pump under the seat there is a brown wire that runs from it to the fuse box. The brown wire had coroded almost in half. I pulled thepin cleaned up the wire and resoldered it to the pin and put the harness back in the module and wala it runs just fine. if you need pics give me a hollar.
Knyland ....that's some excellent trouble shooting on your part... hats-off to you



Not to take this as criticism, but the Warrior wiring diagram shows that wire as Brown/Black (maybe a difference in years)and it is a crimped connection. As you are aware it connects to the N.O. contact of the FI relay that feeds the Fuel Pump motor
..This 15A circuit feeds the fuel pump exclusively and nothing else. Ithink posting some jpegswould be a great benefit to all that are interested.


Can you describe your exact symptoms from this failure and i'm curious of the approx miles and where you store your bike. Also, I see you have a PCIII so there is some under seat mods that might affect the wiringharness.... anything else underseat like new battery, LEQ etc .... just curious
 
1 - 20 of 20 Posts
Top