STIG- new parts SOLVED~!

[BettinANDlosing]

I would say it's time to replace the throttle body ecu it could have nothing to do with vibrating but more just when the engine is running causes this failure.

[2wheelfun]

Think of a car ignition module or a crank sensor. When they go bad a lot of times it's only when heated up, but work well at ambient. That's been a pain in the rear for car owners for the last 25 years. Add in vibration and who knows they just don't work, some times sporadically. TPS is no different.

[Speedo]

Hey Stig,  I just got on here after a few month's absence.  You're " stumbling" problem....if it's what I've had since new, I just thought it was the nature of the beast.  Most of the time it cruises just fine but sometimes ,( steady throttle' flat road, 40-45 MPH) it seems to lurch a bit.  I, too, have a 200i and love it mostly.  I just didn't know that this is not  'normal'.

[CROSSBOLT]

Today, Monday, is the day for you to test so I may be behind your activity already. Sounds to me the key is engine speed. Watch the volts during the stumble range (4000 rpm?) for fluctuations. Look for loose stuff when the seat tub is out. I'm outta altitude, airspeed and ideas at this point. I want you to find something sooo bad I can taste it!

Karl

[Stig / Major Tom]

A screen grab of the Kymco FI Diagnostic Tool, @ 4300RPM
Spent another 1/2 hr setting up this test - engine warm. Captured this video on my cell phone...figured out how to get it to my PC...but cannot figure beyond this.
So the screen grab.
 You can clearly hear the engine at a steady speed - so, I'm not playing with the throttle.
Throttle is held at 7.7 degrees of twist of a possible 89 degrees on my scoot.
At a lower throttle you can hear the engine bang on and off but so quick nothing shows on the scanner.



A split second later....


Will test again tomorrow eve. with the seat off - to look for the vibrating pieces some folks think is causing this erratic running. I will try tapping gently on the ECU/Throttle Body/TPS  to see if it has an effect.
Again, no fault codes showing from the scoot CELP or the scanner - and all other areas read by the scanner are in the green.
Stig

[2wheelfun]

Does anyone have an exploded view of the Like intake/throttle body parts diagram? Link or pic? Places like Cyclepedia you need a subscription right?

[200i]

Out of curiosity how expensive is that part...not considering warranty.  The dealer may not be able to read the pics:):/

[CROSSBOLT]

I am only guessing it is an expensive part since it has three things in it. I thought the ECU was separate like all the rest of the EFI scoots.....

Karl

[Stig / Major Tom]

Does anyone have an exploded view of the Like intake/throttle body parts diagram? Link or pic? Places like Cyclepedia you need a subscription right?

Am I correct in thinking that the TPS is the black plastic  thing...the large rectangular block over on the right side in the b/w  drawing?

[Stig / Major Tom]

This used throttle body/TPS/ecu  sold for $249.99 on eBay recently...but here are some good photos of it:

[2wheelfun]

Yea that black box is the MAP, TPS and ECU all in one. What a stupid design to have to replace the whole thing if just one goes bad. It would seem that black box can be detached from the throttle body and has its own part sticker on it, wonder why it alone can't be replaced? ......OK somebody help me out here. Seems the idle can be adjusted by the set screw where the butterfly is at rest. What is the screw next to it for, has to be some kind of adjustment? Also notice the round black plastic cover to the left of the butterfly/idle rest? There's a pintle/screw there under it, is that for the map measurement or part of the idle circuit? Seems if it's part of the idle circuit and folks have idling problems cleaning that might help it a lot. If it's for map measurement that could be a big problem if it's dirty.........just thinking.

[2wheelfun]

According to this website all the different parts of the throttle body has their own part #s. It's in pdf and page E08.  http://kymcospareparts.com/images/stories/PDF/scooterover50/Like200i-TopCase-KA40AA.pdf

[Stig / Major Tom]

According to this website all the different parts of the throttle body has their own part #s. It's in pdf and page E08.  http://kymcospareparts.com/images/stories/PDF/scooterover50/Like200i-TopCase-KA40AA.pdf

I will give parts warehouse a call with that number for the TPS.....and see what happens.
Will NOT be buying this myself!
Never seen this listed apart from the whole. I suspect the TPS cannot be purchased separately.
Thanks for the info.
Stig

[CROSSBOLT]

Guess what? I don't have a wiring diagram for our Like200i and therefore cannot determine why the connector to the MAP/TPS/ECU has so many wires hooked to it in that massive plug. I suspect the actual ECU is somewhere else on the bike like all the rest but won't bet money on it. In any case, I agree, you should not have to fork over a dime for whatever that big block is. Did you get anywhere with trying the stumble rpm while checking voltage? The TPS looks really suspect with your pix.

Karl

[Stig / Major Tom]

Hey Stig,  I just got on here after a few month's absence.  You're " stumbling" problem....if it's what I've had since new, I just thought it was the nature of the beast.  Most of the time it cruises just fine but sometimes ,( steady throttle' flat road, 40-45 MPH) it seems to lurch a bit.  I, too, have a 200i and love it mostly.  I just didn't know that this is not  'normal'.

I'd have your dealer take a look at it - test ride it if you think it will show itself.
Hope you're not picking up something like an out-of-round tire or unbalanced tire?
Those stock Kendas are not exactly top of the line shoes!
Stig