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throttle

  1. Tps -- ecu

    Dyno/Tuning Room
    Have a 08 KFX450R. last time I rode, it started stalling when I release the throttle. if I actuate the throttle slowly it seems to run, but then stalls when I let off the throttle. I checked the TPS voltage and adjusted it. It was a low at .50 but then I adjusted it to .60V. Then I checked...
  2. Help! Bogging at half/full throttle

    Member Introductions
    So ive been having this issue where my quad will bog down at half to full throttle once the bike is warm. My fuel pressure is ~43psi while idling then drops when pressing on the throttle. Is this standard? The fuel pump screen/ filter was dirty and chewed up. currently in the process of...
  3. kfx 450r 08 bogging problems

    Engine/EFI/Drivetrain
    I've been on this forum looking for threads that would help with my problem with my quad bogging when I give it gas. Today I've decided to sign up because nothing has worked for me. this is what I've done so far: New sprak plug Clean my jets bought new tps Clean air filter Used electrical...
  4. 2008 KFX450R Problems

    Engine/EFI/Drivetrain
    Okay guys, I got my Kfx a while back and I'm pretty much new to these ATVs. So back to the problem I would be going and the KFX would be running fine but when I hit 75-100% throttle it would miss and sputter really, really bad. And me and my brother was trying to fix it and we seen a website...
  5. TPS adjustment Q

    Engine/EFI/Drivetrain
    When you guys are setting your TPS, the service manual says, "Let bike heat up thoroughly, then check." Well I check the output voltage at 3 different times, here are my results. Bike cold - .44 After running for 2 minutes - .58 After running for 7 minutes (coolant fan running) .65 Now I...
  6. KFX450r Throttle Position Adjust

    Body/Controls/Protection
    Hello. Great Site btw. Recently I sold my beasty ltz and my parents bought me a red 09 kfx450r. It is so much more powerful! Anyways I was wandering if there is a way to adjust the position on the thumb throttle when it is unpressed? Because where it is unpressed now stresses out my thumb a...
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