bike idiling ruff

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mar67655

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Dec 10, 2010
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i just bought an 05xb12r it sat for over a year i changed all the fluid it fires wright up but it idils realy ruff and the check engine light comes on any suggestions
 
Do plugs, wires and get an ECM spy cable so you can find out what code your bike is throwing.
 
Start with what bentlife said. Also if you do a quick search there are many threads where many of us have dealt with that same problem.
 
once you do the above make sure you reset your TPS.get the ecmspy cable and ecmspy program and then reset tps. read the ecm guides versions 1 & 2 ,free online do google search and download/copy them .

reset your TPS to where it should be is to look at the TPS screw on the throttle body itself and back it off(back it off all the way where it almost unscrews all the way, if you have just to make sure) where the screw is not touching at all.it is the screw under both of the throttle cables on the front of the throttle body.(you will need to remove all off the airbox upper & lower) then twist your throttle several times and release it each time to make sure the butterfly valve is COMPLETLY CLOSED and then hold the throttle closed with light clockwise pressure on the throttle grip., and then press reset TPS (note the values on degrees & percent should both read ZERO RIGHT NOW,.)after you press reset TPS wait for it to say (onthe bottom of the ECMSPY window) tps reset comlpete or done. now turn the idle adjuster again until it reads 5.2 to 5.6 degrees . then you can start it up an let it warm up to 160C(320F) and then adjust the IDLE TO 1050 to 1150 RPM. that is all there is to it . and then you can do any tuning from there if want. hope that helps. please remember if the TPS is off then it effect everything else.


The TPS is the essence of this tuning.
If the TPS value is incorrect, the ECM will provide the amount of fuel required for the wrong throttle setting and hence poor running will occur. A worse scenario is if you tune the bike with an incorrect TPS value, then any future correction to TPS will result in incorrect fuel maps
you might want to while your at it to also reset the afv too.


if it set for a year if thier is any old gas in the lines the gas maybe bad and you may have a dirty clooged injectors , if after you do all the above and still have rough idle or rough running try running injector cleaner through or at least run some stabil through it.
did you empty out the OLD gas or just run it til it died , if you did that you would still have some little bit of old gas in the tank, or did you just add new gas to the old?
 
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