| Author |
Message |
    
Motobear46
| | Posted on Thursday, June 25, 2009 - 12:10 am: | 
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I replaced the TPS sensor on my 06 Uly (based on some earlier trouble shooting).
I reset the tps using Ecmspy following all the steps. Now the bike barely runs at all. I reset the tps a number of times setting it everywhere from 4.5 t0 6.0 at closed throttle and it runs differently each time but never as it should.
I am reaching my wits end here.
Barry |
Bosephus
| | Posted on Friday, June 26, 2009 - 10:43 am: |
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Motobear,
Reseting the tps should set it to 0 at closed throttle. Then adjust to 5.1 or so for tick over. |
Fahren
| | Posted on Friday, June 26, 2009 - 10:52 am: |
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Barry,
It may be possible that while installing a new TPS, you set it wrong, so there's no way you can get a true zero w/o doing what's called a "hard re-set." Try this:
(not my instructions, so I can't take credit or blame - just passing it on FWIW):
1. Remove your airbox assembly and it's base, remembering to disconnect the airbox sensor. The TPS sensor is the black plastic item on the side of the TB, held on with two bolts. If your TPS has two orange dots, you have the new revision with the vertical alignment tabs. This procedure applies to the old style as well.
2. Adjust both throttle cables so sufficient slack is available. Also, Back off the idle adjustment cable until the Butterfly Valve (BV) will snap shut without touching the idle cable stop.
3. With a scribe, mark the TPS position by scratching a single line from the throttle body to the TPS. This will serve as a reference point just in case.
4. With a 7mm open end wrench, remove the two TPS mounting bolts and remove the TPS from the throttle body.
5. Remove the fine plastic debris from the internal link part of the TPS and the inside of the throttle body. Apply a small amount of high temp silicone grease to the tabs on the TPS to minimize wear in the future.
6. Refit the TPS and bolts, (in the same orientation that it came off, i.e. so that the scribe marks are close), but leave the bolts slightly loose, and turn the TPS counterclockwise, (As you look at it), this is a very small amount.
7. Insure the Butterfly Valve is totally closed, then turn the TPS clockwise until you feel the spring make contact with the internal link tabs on the BV. (Sometimes this is hard to tell, due to the friction of the rubber o ring, so it may be easier to just turn the TPS fully clockwise, until it stops against the bolts). This is a very small amount of movement, but it is critical! Now tighten the mounting bolts.
8. Most of you will notice that according to your scribed reference marks, your new position is just slightly right of the old position. Now your TPS and BV are truly aligned, without play.
9. Perform a NORMAL TPS reset w/ your ECMSpy.
10. Make sure you've reconnected the airbox sensor and refitted the airbox assembly, and have adjusted the throttle cables for the correct amount of slack.
11. Now you have a solid TPS zero. Remember, after a TPS reset, you need to ride the bike for it to re-learn it's AFV, (Air/Fuel Value). Get it warm and ride the bike at 70mph in top gear or between 3000-4000 RPM's, try to avoid hills to keep the throttle as constant as possible for about 2-3 minutes. When you stop, re-adjust your engine idle to 1050RPM's. |
Blake
| | Posted on Saturday, June 27, 2009 - 12:41 am: |
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TPS Reset does not set TPS to zero. It simply records the voltage at closed throttle, whatever it may be.
AFV = Adaptive Fuel Value. |
Motobear46
| | Posted on Saturday, June 27, 2009 - 10:05 am: |
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A quick question;
With the butterfly closed, I believe the tps reset command is taking the output from the sensor and establishing a baseline to compare throttle opening to sensor output.So at idle it now has certain pulse widths for the two injectors established.So then as I adjust the butterfly to the 5.2-5.6 degrees does the ecm ramp up the injector pulse width as well? Because at 5.2 to 5.6 degrees the bike won't idle and smells very rich in unburnt fuel.With it set to 4.9 or so the idle smooths out and it feels normal.Can I do a test ride at this setting or might I cause some damage by running too lean ?On thing I noticed was that the tps line on the datamap I made while still in the garage is much smoother and consistent than before. So I am optimistic I may have found the cause of my original problem.
Thanks for all the great input.
Barry |
Fahren
| | Posted on Saturday, June 27, 2009 - 01:00 pm: |
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Barry,
Big clue from your last post:
It is important to distinguish between percent and degrees on the TPS reset. You want to reset your TPS at zero with butterfly valve fully shut, then wind up idle to 4.6 degrees which should be 5.1 percent.
If you wind it up to 5.2 - 5.6 degrees, the percent will be way too high. So your 4.9 is better than the 5.2-5.6 you were mistakenly going for. Try seeing where your idle hits 1050 in the 4.6-4.9 degree range, and you're done.
The 4.6 degrees/5.1% is from ECMSpy "Steve's tuning guide." }}}}}}}} |
Kalali
| | Posted on Saturday, June 27, 2009 - 07:22 pm: |
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Just keep in mind that the 5.1% is merely a guideline and it varies from bike to bike. For example, mine works best if I set my idle at 4.7%. Don't get too hung up on the exact number. Just make sure you do the TPS reset correctly (the butterfly is totally closed) and then just adjust your idle to something between 950-1050. |
Fahren
| | Posted on Saturday, June 27, 2009 - 10:39 pm: |
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How many times have I posted this: "Kalali is right."
get into that range, and tweak it until it feels right. |
Motobear46
| | Posted on Saturday, June 27, 2009 - 10:49 pm: |
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I'm at the end of my rope.
I swear I'm resetting the tps properly.
I've read the tuning guide a million times . I followed Al's instructions to the letter.I loosened and rotated the sensor clockwise. I loosen the idle cable and can feel the butterfly sticking at the point I reset the ecm. I've adjusted the idle to 20 different levels above and below the 5.2-5.6 degrees.
The bike at idle varies from "chuffing through the air box while idling around 1000rpm then eventually stopping to hunting and surging at idle then dying as I apply throttle.I'm going to reinstall the original tps for lack of a better idea to see if I can at least regain its earlier state.
Thanks as always for trying to help.
Barry |
Blake
| | Posted on Sunday, June 28, 2009 - 04:26 am: |
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Reset the TPS, then just adjust idle until you get 1050 rpm. |
Kalali
| | Posted on Sunday, June 28, 2009 - 08:59 am: |
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One other thing you may want to check is to make sure that your throttle control (the one you twist on the bar) is in the "closed" position. Sometimes there is a little friction at the end of travel when it springs back to rest. |
Fahren
| | Posted on Sunday, June 28, 2009 - 12:14 pm: |
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I loosened and rotated the sensor clockwise. I loosen the idle cable and can feel the butterfly sticking at the point I reset the ecm. I've adjusted the idle to 20 different levels above and below the 5.2-5.6 degrees.
Barry, you have received sound advice from at least 3 posters on this. From your latest post, it seems the thread is going around in circles (Deja vu all over again). Now that you have rotated the sensor clockwise, you may really need to follow the TPS hard re-set (how-to already posted above) - carefully, including item 11. Then, you need to get out of the 5.2-5.5 degree range and look to set it in the 4.6 degree range (already posted above).
Maybe I am misunderstanding your latest post, but from what you write, it doesn't appear that you are heeding advice given. I hear your frustration, but re-read the above posts, and give it one more try... patiently... carefully.}
(Message edited by fahren on June 28, 2009) |
Blake
| | Posted on Sunday, June 28, 2009 - 02:23 pm: |
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To clarify further...
Just forget the degrees and set the idle to 1050 rpm and then check that the sensor is in the proper output voltage or degrees reading range. If it isn't then in the specified range, then adjust it so that it is, then perform another TPS reset.
The manual requires that the TPS output voltage be within a specific range, something like .5 volts or so IIRC. At least that used to be the case. You don't touch the TPS after doing a reset. Doing so renders the reset null and void. If for some reason the TPS is out of range when idle is set at 1050 rpm, then you adjust it and then perform another TPS reset.
Clear as mud yet? No?
Get a service manual. |
Pitbullss
| | Posted on Saturday, July 18, 2009 - 06:22 pm: |
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All they do in the dealership with the Digital TechII is zero the idle adjuster (0 vdc) then set it to 5.6-6.2 vdc range. Run the motorcycle to operating temperature (300-320'F) the dial in your idle to 950-1050 rpm or wherever you feel fit |
Blake
| | Posted on Wednesday, July 29, 2009 - 08:12 pm: |
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Wrong. |
Blake
| | Posted on Wednesday, July 29, 2009 - 08:32 pm: |
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FYI for '08 & later owners:
To do a TPS reset on '08 and '09 bikes
1. Switch the Run/Stop switch to the Run position.
2. Turn ignition key on.
3. With the engine off, rotate the throttle grip from the closed throttle position to the wide open throttle position and back to closed position 3 times holding the throttle grip against each stop for one full second.
4. Cycle the key off and back on. |
Bigo
| | Posted on Thursday, July 30, 2009 - 10:01 am: |
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The percent and degrees you set to is no big deal. This just refers to a baseline. As others have stated- it is an individual concern. Those two numbers are just to get you in the ballpark. Do not get hung up on specific numbers. Adjust the idle to around 1050 rpm after TPS reset. You can actually adjust the idle by sound, the tach, and what feels comfortable to you. You really do not need the ECMspy for that. The TPS reset does need to be done correctly, with the throttle plate fully closed. Try making sure it is closed by taking the air cleaner off and actually looking at it and holding it closed.
The symptoms you describe of "chuffing, surging and eventually stalling from idle" may have something to do with the cold start enrichment.
whatever you do- you need to record the numbers before you start changing settings.
So reset the TPS to zero at fully closed throttle as described. Then adjust the idle speed to your liking. It usually likes around 1050 RPM. |
Bigo
| | Posted on Thursday, July 30, 2009 - 10:05 am: |
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By the way Motorbear-
Have you checked for trouble codes? |
Buellx1innh
| | Posted on Tuesday, August 11, 2009 - 09:22 am: |
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You might want to try checking the motors static timing. Its fairly easy if you have a voltmeter (just tap into the cps and read the voltage). If the engine is not timed correctly that would certainly do it. Might be worth it considering it only takes 30 minutes or so |
Kalali
| | Posted on Tuesday, August 11, 2009 - 12:25 pm: |
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Ryan, could you please explain a little more as how you "tap" into the CPS? I assume you have to drill the rivets to get the cover off. Right? |
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