General Category > Engine related issues

Q: TPS Adjustment procedure

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Seppo:
Seems I have the pleasure of "opening this section up"...

I have worked now for some time with high idle. Engine idles @ 1200 - 1400. Sometimes decreases to 1100.

- no fault codes in the system
- done the "keydance" / reset of TPS multiple times
- no air leaks (tested by spraying start-gas around TBs)
- plenty of slack in the cables
- throttle returns well with a "click"
- turning handles has absolutely no effect on throttle / engine RPMs

Now to the question: When I run the TPS Adjustment procedure the bar rises always above the center to the right/"red" area (about 1"). BUT when I in this situation turn the throttle that couple of millimetres "off" like cancelling the cruise control against the spring / microswitch (cancelling the cruise) the bar lowers right back in the middle of the "Green". It stays there even when I let the throttle go. Is this normal or should the bar settle "in the middle" by itself when the test is initiated.

When the bike idles, turning the throttle off (like during the test) has absolutely no effect on the RPMs

Any idea of where/how to continue?

-Seppo

StephanT:
maybe you should tell us what bike... better yet, pls post an Autoscan

Seppo:

--- Quote from: StephanT on May 21, 2013, 10:24:31 AM ---maybe you should tell us what bike... better yet, pls post an Autoscan

--- End quote ---

OH **it!  :o Forgot it of course - stupid me. How many times have i seen that valid request  :-\ . Bike is K1200LT-99 Unfortunately not near enough bike to get the Autoscan...

StephanT:
have you done the TPS alignment to the T, with the idle actuator removed while doing the procedure etc?

wondering if Idle actuator is the culprit ?  ...however i know very little of the LT's.. maybe someone more LT savvy wants to take over?

best,
Stephan

Seppo:
Nothing different / fancy compared to old school K1200RS (or rather -GT with cruise control). What I am wondering is: If everything with the bike is at it should, how should the bar look like after launching the "Start" (with Idle Actuator in place) in this TPS-procedure. So does it go on the "right/red-side" because of idle actuator in place? So should the IA ALWAYS be removed before this procedure for it to give meaningful outcome??? I just haven't see detailed procedure description anywhere so I am maybe asking stupid questions.

Seppo

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