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Thread: tps sensor

  1. #1
    Join Date
    Sep 2006
    Posts
    288

    tps sensor

    i have a bad tps sensor bike starts right up idles perfect but hit the gas and it breaks up bad and backfires can i just buy a new tps and install it someone told me you need to have some kind of volt meter wich doesnt make sense to me i cant just get a new one and replace it thanks

  2. #2
    Join Date
    Nov 2003
    Location
    Morehead, KY
    Posts
    497
    You can replace it but you have to adjust it when you put the new one in. That is pretty confusing from what I've heard. I've had two go out this year and just replaced the throttle body both times. It was easier but cost more.
    Chase Cunningham #419
    Owner of Morehead Motorsports
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  3. #3
    Join Date
    Mar 2004
    Location
    Minnesota
    Posts
    186
    You sure its the TPS sensor? It sounds like the same symptoms mine had. Mine had a bad fuel pressure regulator.
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  4. #4
    Join Date
    Nov 2003
    Location
    Morehead, KY
    Posts
    497
    Fuel pressure reg. is also a common problem. It's harder to test for.

    My best suggestion is if you have a friend that will let you try his throttle body it'd be easy to rule out the TPS.

    That's what I've always had to do just start switchin parts off the practice bike lol. Good luck!
    Chase Cunningham #419
    Owner of Morehead Motorsports
    Media Allstars team member
    08 GNC +25 National Champion
    08 GNC 4-stroke A #4
    06 GNC Open A #3
    06 GNC +25 #2
    04' GNC Open B #2
    04' GNC Prod. B #10
    00' GNC 250B #7
    03' GNC MX Open B #6
    03' GNC MX 4 stroke prod.
    #12

  5. #5
    Join Date
    Sep 2005
    Location
    Corona, CA
    Posts
    407
    My guess would be, in this order-

    1-Fuel pressure regulator
    2-Fuel Injector
    3-TPS
    4-Fuel pump.

    I had all but the TPS go out on mine. You can get a $30 fuel pressure guage at any automotive store to check all you fuel system out, its super easy.
    '06 LTR

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    D37 G/P-AMA So-Cal MX racer #Q3 Vet Expert 2011

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