| Author | Message | ||
     Pnw_uly |
Did a limited search with no luck, but if some of the experts can point me in the right direction, I'd appreciate it... Seem to have an issue with my new '08 XT (bought new in July, just over 4K). After about an hour ride (and usually after topping off on fuel), the bike starts rough, and I have to usually apply throttle to keep it from stalling. Usually get a surge after I get going, but not a result of throttle application. Almost seems like I should be reaching for a choke knob like on my FXR... Seems more pronounced after I installed the comfort kit a few weeks ago, but still waiting to execute the ECM re-flash. Any chance the comfort kit ECM re-flash will correct the problem? Or more importantly, is there anything I can pass on to the Service Techs when they conduct the re-flash that will fix this issue? Thanks for any info, Paul | ||
| Trevd |
What rpm range does it surge in? My '08 XT ran like crap below 3,000 rpm for a while until I got the latest (at the time - June) ECM update that was released in January I believe. That fixed the running below 3k. Since that update, mine has been running great... | ||
| Froggy |
The bike should be checked to see if its running the latest ECM flash, regardless of the kit or not. The kit reflash overwrites it anyway, so if you get that, it might fix your issue. | ||
| Pnw_uly |
Trevd - It drops below 800 RPM so I have to throttle it up to 12-1500 to keep it from stalling, then surges between from 2-2.5k... Froggy - Thanks. Was thinking that the service guys might have adjusted the TPS during the 1k, but hopefully the ECM re-flash will fix everything... Paul | ||
| Okc99 |
Search for dozens of posts on this issue. Some of us here solved it. IAC I believe is the component that needed replaced. | ||
| Trevd |
get the ECM update - I bet that fixes it. Let us know though... | ||
| Mrsnuggles |
Also check the ECM and connectors. My seat was pressing down on this, and caused a short. Thought it was spark plug wires, replaced those. Checked for leak, nada. When I pressed down on the ECM/Connectors, it started backfiring. I had to raise my seat with washers, and replace my ECM. Problem solved for me. Was experiencing surging and backfiring. | ||
| Woodreaux |
My 08XT had similar issues as you described earlier this year (late May). The solution for my Uly was replacing both IAC and ECM. Since these repairs were made there have been no choking or stuttering or RPM excursions. I installed the Comfort Kit last month and have had no issues. I was talking to the Service Manager on Saturday and he indicated that they had replaced a few more Buell ECM's since they replaced mine. Good luck. | ||
| Blake |
TPS Reset. Too easy to not try. | ||
| Ulykan |
Blake, That might be easy if you had a dealer that would agree that a problem exists. Mine doesn't. | ||
| Rwven |
Ulykan, You don't need the dealer to do a TPS reset on an '08. Key ON Killswitch ON Turn throttle from full ON to full OFF 3 times, holding 1 second at each position. (Don't force, use moderate pressure at stops) Key OFF Wait 10 seconds. DONE! (Message edited by rwven on September 16, 2009) | ||
| Ulykan |
Ulykan, You don't need the dealer to do a TPS reset on an '08. Key ON Killswitch ON Turn throttle from full ON to full OFF 3 times, holding 1 second at each position. (Don't force, use moderate pressure at stops) Key OFF Wait 10 seconds. DONE! Thanks for the tip. I'll give that a try. | ||
| Ulykan |
I just did the reset. Later on I'll go for a test ride and see if there's any change. At idle, it didn't die but after a minute or two it did try to quit then it idled faster by a couple of hundred rpm then settled into its normal rhythm. I let it sit for a few minutes then started it again and all was normal. Time will tell. | ||
| Pnw_uly |
Thanks All - This site is awesome... Have the comfort kit ECM update scheduled for this weekend, and will make sure they have the most up-to-date programming installed. If that fixes it - then great; if not, TPS update. Quick question on the TPS update (from browsing a similar thread)?: Doesn't the bike need to be "hot" for the best effects of the TPS reset? Have read some comments that a "cold" reset may be problematic... Thanks again, Paul | ||
| Rwven |
Paul, I've been trying to get that answered also. The 06's and 07's have to be done hot, but I've gotten no clear answer whether or not hot is better for the '08's. I'm told it's not specified. | ||
| Rainman |
It seems like there are lots of issues with resets and ECMs and the like with the fuel injected Buells. I have no similar issues with my carbed Blast. Do all FI bikes have these issues? Not trolling, just no experience with EFI | ||
| Froggy |
I personally would do it hot anyway, as thats when the bike will be used 95% of the time. The issue with the 07 and older bikes was that after you do the TPS reset, you have to adjust the idle screw, and if the bike isn't warmed up you will set the idle too low/high.
There aren't any more issues with FI Buells than there are with carbed bikes. In fact, my 09 1125CR is less problematic and more reliable than my carbed 03 Blast. The main issue with the FI Buells is that TPS resets can be done incorrectly leading to other issues. The 08+ bikes have a newer more superior FI system that gets rid of the need to reset the TPS occasionally. Look on other boards for FI issues, you will see other brands having issues too, usually related to mapping and the way bikes come from the factory to meet EPA regs. | ||
| Natexlh1000 |
What was the magic method of resetting the TPS on the 2008 bikes again? Open and close the throttle five times or something? | ||
| Froggy |
Did you not even read this thread? It is written twice!  | ||
| Blake |
2008 - 2010 Buells TPS Reset: Ignition off. Turn Kill switch to "Run". Actuate throttle from full closed to full open and back to full closed position three times holding throttle grip against each stop with light pressure for at least one second. Turn ignition to off. Turn ignition to on. Done. (Message edited by blake on September 16, 2009) | ||
| Helga |
just to let you know guys that I fixed my Uly ....it was running very bad while cold and not impressive performance at all as I can compare it with my another xb9r .... changed intake seals together with intake manifold as it was taking air in between and fresh latest map...what a difference... apparently there is mistake in intake seals as they are a bit bigger and as well in finish of intake manifold...good luck..I have to take bike to 1050 km away dealer...and guess what .. mechanic have 3 Buells...I was sooooo happy :-)... finally someone who understand my passion and feelings ..... | ||
| Pnw_uly |
get the ECM update - I bet that fixes it. Let us know though... Yep - - The ECM re-flash did the trick. As stated elsewhere on the forum, if you have an '08 or '09, installing the Comfort Kit w/out the re-flash only gives a partial performance upgrade... The re-flash solved the surging / stalling for me. Thanks again for the input. Paul |
