Yamaha WR250R Mega Thread

Discussion in 'Thumpers' started by Sock Monkey, Apr 7, 2008.

  1. thumpididump

    thumpididump MacGyver

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    Yes, the 2nd video is from Marlborough and Limerick. Here's a link to the GPX file

    The 1st video is from the Calabogie area.






  2. DougZ73

    DougZ73 Fading off.........

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    My bad bro.. Party on. :clap:wink:
  3. DougZ73

    DougZ73 Fading off.........

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    Yep..kept my spring too. I was a tad too heavy fully gear up, so I lost some weight. :D All good now.
  4. coresports

    coresports coresports

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    if you have handguards, check that, when i first put mine on it was a bit tight and my throttle was doing the same thing then i backed out the end plug screw a tad and it's fine now, maybe it was close before and the cold has expanded things a bit?
  5. dogjaw

    dogjaw plays well alone

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    No hand guards; just rode it to a cookout, no problems, got back on a few hours later to ride it home, throttle won't snap back to idle, almost like I have cruise control... Couldn't immediately see any binding issues, but will look at it again in the light of day, has to be something embarrassingly simple.
  6. what broke now

    what broke now Petroleum Brother

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    This exchange was addressing the throttle problem ^^^ [page 1905]

    Mine is sluggish as well, but not enough to get me to look beyond cable lube and ensuring the hand grip is free.
  7. Crawdaddy

    Crawdaddy Navigate 2 Adventure

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    I rarely use'em (THEY'RE HUGE) but I have a set since I used to pack them on my KTM 620 Adventure......

    A couple of pics from a ride a few years ago......NO RACKS needed.....

    [​IMG]

    Riding high on the heat shield but manageable

    [​IMG]
  8. mpatch

    mpatch Long timer

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    Check the tps mine had the same issue there is a thread somewhere on how to adjust it.
  9. coresports

    coresports coresports

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    hmm...make's me want to toss my 100% stock (handguards/brake/caliper guards/folding mirror) one owner, well maintained 8,500 mile 08 WRR on a trailer, take a week trip down to FL and sell!! $4,500 & free delivery...any takers? :evil

    [​IMG]
  10. GSF1200S

    GSF1200S Been here awhile

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    I got my information from people who have experience with WTF they are talking about, primarily from this thread and nearly every damn google page on the WR250R because I am OBSESSED with this bike because it is awesome (unlike you). Do you mean to tell me some dude who goes and buys a WR250R and doesnt read on it (just rides it) is suddenly more qualified to address issues that he may have no experience with than someone else who has the accrued wisdom of thousands of owners because he takes the time to research the bike?

    You go ahead and keep drinking the K&N koolaid btw. Make sure you list it in your for sale ads so I can be sure to avoid your bike.
  11. GSF1200S

    GSF1200S Been here awhile

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    Its terrible dude :cry

    Cant find any of them here. Even the Yammie dealer has none in stock and its going to be months (!) before any arrive. You are a lucky man..
  12. KansasBob

    KansasBob Been here awhile

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    Back to the sticking throttle.................................................

    Here is a thread on the Throttle position Sensor.

    http://wr250rforum.forumotion.com/t5568-throttle-on-off-at-idle

    It's not about sticking throttle but more about adjusting the TPS. There is some discussion on the thread about moving the TPS too much one way or the other and causing the throttle to stick. I'm beginning to think there may be a correlation between some of the sticking throttle issues people report, and TPS just by the way it sounds, but that said I have no personal experience with the problem. What I have done is loosen both screws holding the TPS and adjust it, which is a huge pain in the ass.

    What I am thinking is.......... that if the TPS was not adjusted evenly at both screw locations at the factory it could be off center from the shaft just a small amount, enough to cause a bind. This could be the reason some people found it to be in a bind when making adjustments.

    Unfortunately it would be a pretty labor intensive job to loosen up the TPS and see if the TB can be taken out of a bind by moving it. :becca
  13. mpatch

    mpatch Long timer

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    Not that hard to adjust you don't need to loosen the bolts just tap it with a blunt object carefully
  14. KansasBob

    KansasBob Been here awhile

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    Some have managed to "move" the TPS using this method but others have not been able to make it budge.

    What I'm saying is if you loosen both screws to let the TPS "float" and the throttle stops sticking you could tighten them back down with the TPS set correctly, out of a bind.

    Heading down another road........... Ford had a problem with the butterfly on some of their throttle bodies sticking a few years back. It had something to do with the shaft and bearings. There was a recall and the TBs were replace under warranty.
  15. dogjaw

    dogjaw plays well alone

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    Not being familiar at all with this bike, I have no idea where to even begin looking for the elusive TPS; as a DR rider, these things don't even exist in my world...looks like I'll be pulling up a schematic when I get home.

    If this is what it is, Any ideas why it would choose the first cool night ride to go out if adjustment?
  16. KansasBob

    KansasBob Been here awhile

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    My Ford Explorer that had the TB replaced stuck the first time for me on a cold night. I've had one Carb stick from icing up too. Cold humid air collected ice around the butterfly when it was below freezing, but once you stopped and let it set for just a minute it melted and freed up.

    Starting on Page 3 of the post I linked there are photos of the Process and a pic of a home made special tool.
  17. mpatch

    mpatch Long timer

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    There is more to it than just tapping it back you also need to get into diagnostic mode to get within parameters which is somewhere in the mid 90% range
  18. dogjaw

    dogjaw plays well alone

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    Jeez, and I thought it would be as simple as lubing a cable or two; makes me second guess moving away from the DR.
  19. mpatch

    mpatch Long timer

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    To access the controls for making these changes, you must first make a jumper wire to ground (did mine to the negative battery terminal) from the "extra" black wire in the connector for the lean angle sensor underneath the seat. There are three wires on one side of the connector that are used by the LAS and another black one on the opposite side that connects to nothing. This is probably used by the dealer to connect to Yamaha's diagnostic software.

    OSU:(Here is the lean angle sensor under the seat.)

    OSU:(There is the one lone black wire on this side of the connector.)

    OSU:(Here is the other side, you need to jump the black wire to the ground wire on this side.)

    Hold down the "reset" and "select 1" buttons on the insturment cluster at the same time and Turn on the key (but don't press the starter button) while continuing to hold these two buttons. After 8 seconds the display will read "diag"
    press select 1 (i think) until you get to the screen that show throttle % the TPS is a black plasic round thing on the right side of the engine behind the frame rail use a dowel or something similar to try to tap it a bit, it took me a bit of back and forth to get the % right and have no throttle bind
  20. mpatch

    mpatch Long timer

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    The tps was the last thing I messed with after tying everything else. It wasnt until I pulled the cables off of the throttle body and moved the plate by hand and felt the binding issue that;s when I figured it out.