| Author | Message | ||
     Goldtooth |
2006 Uly, EBR ECM, modded stock muffler, K&N filter. Tried to reset the TPS a few times with no improvement in idle. Bike is cold. Starts up, idles good for about 5-10 secs then starts hunting up and down from 700-1500 rpms. Sometimes dies. Starts back up and repeats. Take it for a ride and it is surgy and if you hold it at a steady throttle, it will hiccup and cough and maybe even pop through the intake. Keep riding and it goes away. I think it is when it enters open loop. Runs good after that. Letting it idle on ECM Spy, I can track when it goes from closed loop to open loop, it immediately raises the idle a bit and smooths out. I don't want to throw money at it and want some logical steps. I may go back to the stock ECM and see if that improves it. Don't think it is intake seals but I may switch those out. TPS sensor? AIC sensor? Any other ideas? thanks! nate | ||
| Djohnk |
I would start with the easiest first: 1) It may not like where you have the idle set (idle doesn't effect TPS -- you set that after resetting the TPS). My '07 Uly is very finicky about where the idle is set. Keep a tool handy on start-up and while you ride to adjust it to where it likes it. 2) You might also take a peek down the intake and make sure its fairly clean and the throttle plate was really closed when you reset the TPS. 3) Do a intake seal leak test. | ||
| Deeds |
Your issues sound exactly like mine. I've replaced the seals and I have a new TPS on the way. I'll update when I get it. | ||
| Goldtooth |
Cool Deeds, let's keep this thread updated. I may swap out my ecm this weekend to see if it makes a difference and doesn't cost any money. nate | ||
| Electraglider_1997 |
Here is something to rule out. Take off your airbox cover so that the you can view the interactive muffler valve control mechanism. See if it is moving when the idle starts searching on you. That control mechanism should not be moving during idle. If it is then I'd disconnect the cable at the mechanism end (easier than than at the muffler) and then see if the idle stabilizes or at least gets better. If so then do as Djohnk advises in his second bullet point. Another thing is that the two oil vapor hoses that come into the airbox should not stick up over a 1/2 inch according to the service manual otherwise they might interfere with the IAC, probably by puking too much oil vapor directly onto the IAC sensor. | ||
| Goldtooth |
With the EBR ECM, the exhaust servo is disconnected. I have also done a breather re-route and plugged the holes from the original routing. I will double check that they are low but I believe they are good. During my last check, I wiped down the TB pretty good and checked the plate to assure it would fully close during the TPS reset. Looked pretty good then but going to pull it all back apart this weekend and start over. Going to Autozone today to pick up the Duralast TPS for $35 to try. Beats paying nearly $100 for the OEM. | ||
| Etennuly |
I would start with the even more basic of the easy stuff.....check the spark plugs. Reading them can give clues as to what is wrong. If they are slightly black soot covered but real dry, they are probably OK for this colder weather and short test trips that you have been doing. Also a fouled plug that has been cleaned and re-used can act this way. Cold it will run poorly or not at all, the engine can be forced to warm up, once it gets warmed up, will run Ok but not great. If either are wet/black change them, start there. No matter what else you throw at it, if this is the problem, it is something that will not fix itself. In cold weather fouled plugs are fairly common especially with short trips. | ||
| Teeps |
Have you ever set the TPS with the engine @ operating temperature? My '06 Ulysses with '07 flash insists that TPS be set with hot engine. | ||
| Goldtooth |
Etennuly- Changed plugs to the Iridium from American Sport Bike. Old OEM type plugs looked pretty good, not fouled at all. Changed them just to be sure. Teeps- I have reset it cold and hot, assuring it is in open loop. No change. I will hook it up to ECM spy and post a screen shot tonight so everyone can look at the values like AFV. Thanks so much for the replies so far, I am sure we will figure this out! nate | ||
| Etennuly |
Good on the plugs. Are the battery connections tighter than you might expect that they need to be? We had an '06 issue with the bolts on the battery cables being about a few thousandths too long. Putting a star washer under them worked. If you can grip the cables and force them to move with your fingers, if they turn at all they are too loose. They can and will naturally loosen over time and miles, also causing run issues that are worse when cold. | ||
| Goldtooth |
Tried the Autozone replacement TPS I read about- part number Durolast TPS213. Other have had luck with it but it did not fit my May 2006 Uly. The tabs to into the throttle body did not match up. I guess it is off to asb or Harley. arg | ||
| Goldtooth |
Here is the TPS213 vs stock. You can see the ears where it engages with the TB are in different places. Bummer, hope Autozone takes it back!  | ||
| Djohnk |
This explains why it won't fit: http://bit.ly/1uIEcVi | ||
| Electraglider_1997 |
I see that the top one is the old style and bottom one is the new style. Appears that mine would use the old style since mine has an 05' build date. Fortunately mine still seems fine. | ||
| Electraglider_1997 |
Goldtooth, when is your 06's build date? Shown right behind the right side steering head on the frame. | ||
| Electraglider_1997 |
Make sure your muffler valve isn't rattling to different positions. Since it is disconnected then make sure it is wired to stay in whatever position it is supposed to stay at. Either wide open or closed but not some where in between unless that is what EBR recommends with that ECM. | ||
| Goldtooth |
May of 06 The muffler valve is gone. I have an asb TPS on it's way to arrive on Tuesday. Will know more then | ||
| Goldtooth |
Update: Received the American Sport Bike TPS today and installed it. Did the full reset assuring the throttle plate was 100% closed. Fired it up and it idled very well. I was pretty stoked. I let it run until closed loop and set the idle. Good so far. Turned it off to pull it out of the garage to test ride it and then fired it back up. Hunting idle, almost died. Exactly what it did before the swap. Damn! Rode it anyway. It was better but still felt surgey around 3K. Brought it and checked it on ECM Spy. AFV was 100 everything else seemed. good. Decided to put the stock ECM back in to see if it would change. Fired it up without even resting the TPS and the idle was like glass at 1K. No hunting at all. Took it for a ride and it accelerated great. A bit down on power under 4K from the EBR unit but was smooth. I am going to let it cool down and see how it idles again and try and take it for a longer ride tomorrow. If it was the ECM I am going to try and send it in and see if they can find anything wrong with it. Hope this cures it! nate | ||
| Froggy |
Goldtooth, which version of ECMspy are you using? The old, freeware ECMspy is known to corrupt the EBR ECM, it is not compatible. The newer one you have to pay for (ECMspy Mono) works. | ||
| Goldtooth |
You know Froggy I think it is the older free version. I did not know about the corruption. Damn, I may have caused my own problems. I will send it back to them and see how much it would cost to fix it. Thanks for the heads up on the ECM spy and EBR. nate | ||
| Goldtooth |
Update- Stock ECM with updated Race maps. Hauls balls. The idle is a bit off from stock but I will be playing around a bit with the fuel values in those cells in the next few days to bring them up a bit. EGO correction is around 120% at idle which means the cells are lean there. Great power from 4K up. Cruise is a bit surgey but I think some fuel changes in those cells should help that also. Thanks for all of the help so far! nate |
