| Author | Message | ||
     Electraglider_1997 |
I've got about 3500 miles on the ULY. Opened the airbox to simulate 07' airbox and then had dealer reflash ECM to 07 program. Seems that when I come to a stop sign the idle takes longer to come down to 1100 rpms than it did previously. I'm just saying that it seems to behave differently than before the reflash. Never have had a TPS rest. Always has started and idled fine and still does. Would the TPS have anything to do with this or is what I have described just normal for this engine? | ||
| Ft_bstrd |
Sometimes taking a long time to come down to idle is the result of an intake leak. I'd do the TPS just to make sure. Easy fix or low invasive procedure to verify that that's not it. | ||
| Davo |
I would make sure they did the TPS reset after the re-flash! Otherwise if your bike does not ping when hot with the stock timing settings then there is probably not an intake leak. | ||
| Lovehamr |
Another thing to consider is whether or not your idle speed changed after your mods. If after opening up the air box and so-forth your idle speed went up, then you may just need to lower the idle. If your Uly is idling at 1100 rpm or higher when hot it's worth a try. This is accomplished with a small knob in the air scoop and is pretty easy to do. Steve | ||
| Treadmarks |
If I set my idle over 1100 it does the same thing. Try to set it at 1000-1050 and I am sure it will go away. | ||
| Electraglider_1997 |
Idle speed went down about 100 rpms by my reckoning. | ||
| Jmhinkle |
Electra, I had the same problem pop up one day about a week ago out of the blue. When I had my flash done, I also did a TPS reset because it was overdue from the 1000 mile service. It ran fine up until it got real cold here, then that day it was real slow about coming back down to idle and seemed to idle high at times. After that day, it has never happened again or had any idle problems. Also related to it, but prior to it doing this, I was having problems in the morning with it dying out right after I would start it. I would restart it and it would idle real low until it got warmed up. After that day, it now starts ok in the mornings at work, but the idle is still low around 900 until it warms up. Once it warms up, it runs like normal. I'm not sure why or what happened, but it sounds the same as yours. See if it disappears it a few days. Maybe it has something to do with getting acclimated to the colder weather. Here it has been between 36 and 45 in the mornings for the last few weeks so I started parking her in the parking garage at work instead of the bike lot outside. Keeps the dew off the seat and the cold breeze off the oil. | ||
| Electraglider_1997 |
Yeah, you've got to be careful taking off on a cold ULY engine because it might cough and croak because of the cold thick oil I suppose. I usually just start and ride without any warm up. I skip the warm up because from what I see the bike doesn't get up to operating temp for quite a few miles so why waste the gas sitting in the driveway. I have my thermometer dipstick in the oil tank and the oil just has too many opportunities to cool down as it moves throughout its journey in the ULY. The temp reading at the swingarm oil tank just never gets up there like it does during hot weather. I'm rambling here but I'll take all your advice and pay close attention to what the bike is doing. The comment about air leak at the intake is the most troubling response and maybe the best advice to look into. I know from experience on the Electraglide that intake seals can play havoc with the idle. The heat those seals have to deal with is just plain crazy and that is something that I wish the manufacturers would put more thinking into. Anyway, as always, this forum is very helpful. | ||
| Etennuly |
I had the same idle issue when I did my service, I bumped the idle speed to just under 1100 and it seemed like it wouldn't return to idle, and when it did it just kinda' floated around 2500 down to 1500 and then eventually settled back to 1100. I thought for a minute that I screwed it up, then I returned it to 1000 where it was originally and it has been fine since. I've noticed that when having the TPS reset the dealers always set it at about 950-980. I've heard they do that because that is the Sportster setting. I feel it is done to avoid the "floating" idle that can result.  | ||
| Jmhinkle |
Electra, Did your high idle issue go away or stick around? My cold start problem is back. I have to open the throttle when I start her cold or she dies as soon as she lights. When I do get her started, she idles real low and is slow about getting up to the proper idle. Usually takes about 3 miles of riding or 10 minutes of warm-up to get her to idle normal. I have not had the high idle again though. | ||
| Electraglider_1997 |
Jmhinkle, The idle doesn't stay high it just seems to settle to 1100 slowly which I never noticed until after the reflash of the ECM. Circumstantial?, maybe. Starts and idles just fine always and no matter the temperature outside. Once it warms up (after riding for awhile) it seems to come down to idle too slowly but then it idles well. Might be, as suggested, a leaky intake seal or maybe it needs a TPS reset. I'm living with it ok but I do feel that it is not quite right. I'll deal with one of these days. I'll set the idle down a hair as recommended by Treadmarks and Etenully. If that doesn't cure it maybe I'll then try the TPS reset. I just have to decide whether to buy the software for 200 bucks or just get it done for under 40 bucks at the dealer. I'd sure like to have that software because I do have a laptop. (Message edited by electraglider_1997 on November 06, 2006) | ||
| Jmhinkle |
Electra, I've had a few more episodes of the floating idle again lately like yours. It's also gotten stubborn about needing a throttle blip when starting cold. Today I played with the idle adjustment (no software either) and was able to turn it more than I thought I should and the bike still seems to be at 1000RPM. By using the tach that's as best as I can tell it is close to 1050. I will see how she starts and acts tomorrow. I'm hoping that the plate was open a little too much causing my cold starting issue where I needed to dump a little fuel in it as it started and that would also explain the floating idle, but why it didn't happen all the time I don't know. |
